Zone Forecast Product
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
492 FPUS54 KHGX 202133 ZFPHGX Zone Forecast Product for Southeast Texas National Weather Service Houston/Galveston TX 433 PM CDT Thu Aug 20 2026 TXZ211-210500- Austin- Including the cities of Sealy and Bellville 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Patchy fog after midnight. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 108 early this evening. .FRIDAY...Patchy fog in the morning. Mostly sunny. Hot with highs around 101. Southwest winds 5 to 10 mph. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .SATURDAY...Mostly sunny. Patchy fog in the morning. Hot with highs around 102. South winds 5 to 10 mph. Heat index values up to 108. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .SUNDAY...Sunny, hot with highs around 100. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs around 100. .MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. .THURSDAY...Sunny, hot with highs around 100. Heat index values up to 105. $$ TXZ237-210500- Inland Brazoria- Including the cities of Pearland, Alvin, and Angleton 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early this evening. .FRIDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 110. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 110. .SATURDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 108 early in the evening. .SUNDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. .THURSDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ196-210500- Brazos- Including the cities of College Station and Bryan 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early this evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs around 102. South winds 5 to 10 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 103. South winds around 5 mph. Heat index values up to 109. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early in the evening. .SUNDAY...Mostly sunny. Hot with highs 100 to 105. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Sunny, hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .TUESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 110 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 110 early in the evening. .THURSDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. $$ TXZ195-210500- Burleson- Including the cities of Caldwell and Somerville 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early this evening. .FRIDAY...Mostly sunny. Hot with highs around 102. South winds 5 to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 103. South winds around 5 mph. Heat index values up to 108. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early in the evening. .SUNDAY...Sunny, hot with highs 100 to 105. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Sunny, hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs around 100. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. $$ TXZ214-210500- Chambers- Including the cities of Winnie, Mont Belvieu, Anahuac, Stowell, and Old River-Winfree 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. Southwest winds 10 to 15 mph. Heat index values up to 109 early this evening. .FRIDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 113. .FRIDAY NIGHT...Partly cloudy. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 111 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 113. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 110 early in the evening. .SUNDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Highs in the mid 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny. Highs in the mid 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 110. $$ TXZ210-210500- Colorado- Including the cities of Columbus, Eagle Lake, and Weimar 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Patchy fog after midnight. Lows in the mid 70s. South winds 10 to 15 mph. Heat index values up to 108 early this evening. .FRIDAY...Patchy fog in the morning. Mostly sunny. Hot with highs around 102. South winds 5 to 10 mph. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 109 early in the evening. .SATURDAY...Mostly sunny. Patchy fog in the morning. Hot with highs around 102. South winds 5 to 10 mph. Heat index values up to 108. .SATURDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .SUNDAY...Sunny, hot with highs 100 to 105. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs around 100. .MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. .WEDNESDAY...Sunny, hot with highs around 100. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs around 100. Heat index values up to 110. $$ TXZ227-210500- Fort Bend- Including the cities of Missouri City, Mission Bend, Sugar Land, Rosenberg, First Colony, and Pecan Grove 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. A slight chance of showers with isolated thunderstorms this evening. Patchy fog after midnight. Lows in the upper 70s. South winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 110 early this evening. .FRIDAY...Patchy fog in the morning. Mostly sunny. Hot with highs around 100. Southwest winds around 5 mph. Heat index values up to 110. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Patchy fog after midnight. Humid with lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Patchy fog in the morning. Hot with highs around 101. Southwest winds 5 to 10 mph. Heat index values up to 111. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 109 early in the evening. .SUNDAY...Sunny, hot with highs around 100. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ238-210500- Inland Galveston- Including the cities of League City and Friendswood 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 110 early this evening. .FRIDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 111. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds around 5 mph, becoming south in the afternoon. Heat index values up to 111. .SATURDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 108 early in the evening. .SUNDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. $$ TXZ198-210500- Grimes- Including the city of Navasota 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Patchy fog after midnight. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early this evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs around 102. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy. Patchy fog after midnight. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 102. South winds around 5 mph. Heat index values up to 109. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .SUNDAY...Sunny, hot with highs around 100. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Sunny, hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .TUESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 70s. Heat index values up to 110 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 110 early in the evening. .THURSDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. $$ TXZ213-210500- Inland Harris- Including the city of Houston 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. A slight chance of showers with isolated thunderstorms this evening. Lows in the upper 70s. South winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 110 early this evening. .FRIDAY...Mostly sunny. Hot with highs around 101. Southwest winds around 5 mph. Heat index values up to 110. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 109 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 102. Southwest winds around 5 mph. Heat index values up to 111. .SATURDAY NIGHT...Mostly clear. Lows around 80. South winds 5 to 10 mph. Heat index values up to 110 early in the evening. .SUNDAY...Sunny, hot with highs around 100. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Sunny, hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs around 100. Heat index values up to 110. $$ TXZ163-210500- Houston- Including the city of Crockett 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early this evening. .FRIDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs around 103. Southwest winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 111. .FRIDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 40 percent. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 103. South winds around 5 mph. Heat index values up to 110. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph, becoming southwest after midnight. Heat index values up to 108 early in the evening. .SUNDAY...Mostly sunny. Hot with highs around 100. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110 in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110 in the afternoon. $$ TXZ235-210500- Inland Jackson- Including the cities of Edna and Ganado 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the upper 70s. South winds 10 to 15 mph. Heat index values up to 106 early this evening. .FRIDAY...Mostly sunny. Hot with highs around 100. South winds 5 to 10 mph. Heat index values up to 110. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. South winds 10 to 15 mph, diminishing to around 5 mph after midnight. Heat index values up to 107 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 101. South winds 5 to 10 mph. Heat index values up to 108. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 10 to 15 mph, diminishing to around 5 mph after midnight. Heat index values up to 105 early in the evening. .SUNDAY...Sunny, hot with highs around 100. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ200-210500- Northern Liberty- Including the cities of Liberty, Cleveland, and Dayton 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 107 early this evening. .FRIDAY...Mostly sunny. Hot with highs around 101. Southwest winds around 5 mph. Heat index values up to 111. .FRIDAY NIGHT...Partly cloudy. Humid with lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 110 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 101. Southwest winds around 5 mph. Heat index values up to 114. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Humid with lows in the mid 70s. South winds around 5 mph. Heat index values up to 111 early in the evening. .SUNDAY...Sunny, hot with highs around 100. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 110 early in the evening. .MONDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ176-210500- Madison- Including the city of Madisonville 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early this evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs around 103. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 110. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 103. South winds around 5 mph. Heat index values up to 109. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .SUNDAY...Mostly sunny. Hot with highs 100 to 105. Heat index values up to 110 in the afternoon. .SUNDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110 in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 110 early in the evening. .TUESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 70s. Heat index values up to 110 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 110 early in the evening. .THURSDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 115 in the afternoon. $$ TXZ236-210500- Inland Matagorda- Including the city of Bay City 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the upper 70s. South winds 10 to 15 mph. Heat index values up to 105 early this evening. .FRIDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 110. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 109. .SATURDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 105 early in the evening. .SUNDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. .MONDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. .THURSDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ199-210500- Montgomery- Including the cities of Conroe and The Woodlands 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Patchy fog after midnight. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 108 early this evening. .FRIDAY...Patchy fog in the morning. Mostly sunny. Hot with highs around 102. Southwest winds around 5 mph. Heat index values up to 110. .FRIDAY NIGHT...Partly cloudy. Patchy fog after midnight. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Patchy fog in the morning. Hot with highs around 102. Southwest winds around 5 mph. Heat index values up to 112. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 109 early in the evening. .SUNDAY...Sunny, hot with highs around 100. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Sunny, hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 110 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ179-210500- Polk- Including the cities of Livingston and Corrigan 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early this evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs around 102. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 112. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 70s. South winds around 5 mph. Chance of rain 40 percent. Heat index values up to 109 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 102. Southwest winds around 5 mph. Heat index values up to 113. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 110 early in the evening. .SUNDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ178-210500- San Jacinto- Including the cities of Shepherd and Coldspring 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early this evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs around 102. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 111. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 102. Southwest winds around 5 mph. Heat index values up to 112. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 109 early in the evening. .SUNDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ164-210500- Trinity- Including the cities of Trinity and Groveton 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early this evening. .FRIDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs around 103. Southwest winds around 5 mph. Chance of rain 30 percent. Heat index values up to 111. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 70s. South winds around 5 mph. Chance of rain 40 percent. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 103. Southwest winds around 5 mph. Heat index values up to 111. .SATURDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 108 early in the evening. .SUNDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110 in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 105. .MONDAY NIGHT...Partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. .THURSDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. $$ TXZ177-210500- Walker- Including the city of Huntsville 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early this evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs around 103. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 110. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 70s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 103. Southwest winds around 5 mph. Heat index values up to 110. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .SUNDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110 in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .MONDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 110 early in the evening. .TUESDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. $$ TXZ212-210500- Waller- Including the cities of Hempstead, Prairie View, Brookshire, and Waller 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Patchy fog after midnight. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 109 early this evening. .FRIDAY...Patchy fog in the morning. Mostly sunny. Hot with highs around 101. Southwest winds 5 to 10 mph. Heat index values up to 108. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .SATURDAY...Mostly sunny. Patchy fog in the morning. Hot with highs around 101. South winds around 5 mph. Heat index values up to 109. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 108 early in the evening. .SUNDAY...Sunny, hot with highs around 100. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs around 100. Heat index values up to 110. $$ TXZ197-210500- Washington- Including the city of Brenham 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Patchy fog after midnight. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early this evening. .FRIDAY...Patchy fog in the morning. Mostly sunny. Hot with highs around 101. South winds 5 to 10 mph. .FRIDAY NIGHT...Partly cloudy. Patchy fog after midnight. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 105 early in the evening. .SATURDAY...Mostly sunny. Patchy fog in the morning. Hot with highs around 101. South winds around 5 mph. .SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 106 early in the evening. .SUNDAY...Sunny, hot with highs around 100. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs around 100. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ226-210500- Wharton- Including the cities of El Campo and Wharton 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 70s. South winds 10 to 15 mph. Heat index values up to 105 early this evening. .FRIDAY...Patchy fog in the morning. Mostly sunny. Hot with highs around 100. Southwest winds 5 to 10 mph. Heat index values up to 109. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Patchy fog after midnight. Humid with lows in the mid 70s. South winds 10 to 15 mph. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. Patchy fog in the morning. Hot with highs around 101. Southwest winds 5 to 10 mph. Heat index values up to 108. .SATURDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 10 to 15 mph, becoming southwest around 5 mph after midnight. Heat index values up to 106 early in the evening. .SUNDAY...Sunny, hot with highs around 100. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. .WEDNESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ300-210500- Southern Liberty- Including the city of Devers 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear. Lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 108 early this evening. .FRIDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 112. .FRIDAY NIGHT...Partly cloudy. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 112 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 112. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Humid with lows in the upper 70s. South winds 5 to 10 mph, becoming southwest after midnight. Heat index values up to 111 early in the evening. .SUNDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 105. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. .TUESDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. .WEDNESDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. .THURSDAY...Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 105. $$ TXZ313-210500- Coastal Harris- Including the cities of Pasadena and Baytown 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Partly cloudy. Lows around 80. Southwest winds 10 to 15 mph. Heat index values up to 111 early this evening. .FRIDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 111. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows around 80. Southwest winds 10 to 15 mph. Heat index values up to 111 early in the evening. .SATURDAY...Mostly sunny. Hot with highs around 99. Southwest winds 5 to 10 mph, becoming south in the afternoon. Heat index values up to 112. .SATURDAY NIGHT...Mostly clear. Humid with lows around 80. Southwest winds 5 to 10 mph. Heat index values up to 111 early in the evening. .SUNDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows around 80. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows around 80. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows around 80. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. $$ TXZ338-210500- Coastal Galveston- Including the cities of Texas City, Dickinson, and La Marque 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows around 80. Southwest winds 10 to 15 mph. Heat index values up to 109 early this evening. .FRIDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph, becoming south 10 to 15 mph in the afternoon. Heat index values up to 113. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. Southwest winds 10 to 15 mph. Heat index values up to 109 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the mid 90s. West winds 5 to 10 mph, becoming south 10 to 15 mph in the afternoon. Heat index values up to 112. .SATURDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. Southwest winds 10 to 15 mph. Heat index values up to 108 early in the evening. .SUNDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .MONDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Highs in the mid 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny. Highs in the mid 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. $$ TXZ337-210500- Coastal Brazoria- Including the cities of Lake Jackson, Freeport, and Clute 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the upper 70s. South winds 10 to 15 mph. .FRIDAY...Mostly sunny. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 111. .FRIDAY NIGHT...Partly cloudy. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 106 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph, becoming south 10 to 15 mph in the afternoon. Heat index values up to 110. .SATURDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 106 early in the evening. .SUNDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 105. .SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. .MONDAY...Sunny. Highs in the mid 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. .TUESDAY...Sunny. Highs in the lower 90s. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. .WEDNESDAY...Sunny. Highs in the lower 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. .THURSDAY...Sunny. Highs in the mid 90s. Heat index values up to 110. $$ TXZ336-210500- Coastal Matagorda- Including the city of Palacios 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Partly cloudy. Lows in the lower 80s. South winds 10 to 15 mph. Heat index values up to 106 early. .FRIDAY...Mostly sunny. Humid with highs in the lower 90s. Southwest winds 10 to 15 mph. Heat index values up to 110. .FRIDAY NIGHT...Partly cloudy. Humid with lows around 80. South winds 10 to 15 mph. Heat index values up to 106 early in the evening. .SATURDAY...Mostly sunny. Humid with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 110. .SATURDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. South winds 10 to 15 mph. Heat index values up to 105 early in the evening. .SUNDAY...Sunny. Highs in the mid 90s. Heat index values up to 105. .SUNDAY NIGHT...Mostly clear. Lows around 80. .MONDAY...Sunny. Highs in the lower 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows around 80. .TUESDAY...Sunny. Highs in the lower 90s. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear. Lows around 80. .WEDNESDAY...Sunny. Highs in the lower 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear. Lows around 80. .THURSDAY...Sunny. Highs in the lower 90s. Heat index values up to 110. $$ TXZ335-210500- Coastal Jackson- 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows around 80. South winds 10 to 15 mph. Heat index values up to 105 early. .FRIDAY...Mostly sunny. Hot with highs in the mid 90s. South winds 10 to 15 mph. Heat index values up to 110. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. South winds 10 to 15 mph. Heat index values up to 105 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph, becoming south 10 to 15 mph in the afternoon. Heat index values up to 107. .SATURDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. South winds 10 to 15 mph. .SUNDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 105. .SUNDAY NIGHT...Clear. Lows in the upper 70s. .MONDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. $$ TXZ436-210500- Matagorda Islands- 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Partly cloudy. Near steady temperature in the mid 80s. South winds 10 to 15 mph. .FRIDAY...Mostly sunny. Humid with highs in the upper 80s. Southwest winds 10 to 15 mph. Heat index values up to 106. .FRIDAY NIGHT...Partly cloudy. Humid with lows in the lower 80s. South winds 10 to 15 mph. .SATURDAY...Mostly sunny. Humid with highs in the upper 80s. Southwest winds 10 to 15 mph. Heat index values up to 105. .SATURDAY NIGHT...Mostly clear. Humid with lows in the lower 80s. South winds 10 to 15 mph. .SUNDAY...Sunny. Highs in the upper 80s. .SUNDAY NIGHT...Mostly clear. Near steady temperature in the mid 80s. .MONDAY...Sunny. Highs in the upper 80s. .MONDAY NIGHT...Mostly clear. Near steady temperature in the mid 80s. .TUESDAY...Sunny. Near steady temperature in the mid 80s. .TUESDAY NIGHT...Mostly clear. Near steady temperature in the mid 80s. .WEDNESDAY...Sunny. Near steady temperature in the mid 80s. .WEDNESDAY NIGHT...Mostly clear. Near steady temperature in the mid 80s. .THURSDAY...Sunny. Near steady temperature in the mid 80s. $$ TXZ437-210500- Brazoria Islands- Including the city of Surfside Beach 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Partly cloudy. Lows in the lower 80s. South winds 10 to 15 mph. .FRIDAY...Mostly sunny. Humid with highs around 90. Southwest winds 10 to 15 mph. Heat index values up to 107. .FRIDAY NIGHT...Partly cloudy. Humid with lows in the lower 80s. Southwest winds 10 to 15 mph. .SATURDAY...Mostly sunny. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph, becoming south 10 to 15 mph in the afternoon. Heat index values up to 107. .SATURDAY NIGHT...Mostly clear. Humid with lows in the lower 80s. Southwest winds 10 to 15 mph. .SUNDAY...Sunny. Highs around 90. Heat index values up to 105. .SUNDAY NIGHT...Mostly clear. Lows in the lower 80s. .MONDAY...Sunny. Highs around 90. Heat index values up to 105. .MONDAY NIGHT...Mostly clear. Lows in the lower 80s. .TUESDAY...Sunny. Highs around 90. .TUESDAY NIGHT...Mostly clear. Lows in the lower 80s. .WEDNESDAY...Sunny. Highs around 90. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 80s. .THURSDAY...Sunny. Highs around 90. Heat index values up to 105. $$ TXZ438-210500- Galveston Island- Including the city of Galveston 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Partly cloudy. Lows in the mid 80s. Southwest winds 10 to 15 mph. Heat index values up to 105 early. .FRIDAY...Sunny with highs in the lower 90s. Southwest winds around 10 mph, becoming south in the afternoon. Heat index values up to 109. .FRIDAY NIGHT...Partly cloudy. Humid with lows in the lower 80s. Southwest winds 10 to 15 mph. Heat index values up to 106 early. .SATURDAY...Mostly sunny. Humid with highs in the lower 90s. West winds 5 to 10 mph, becoming south 10 to 15 mph in the afternoon. Heat index values up to 108. .SATURDAY NIGHT...Mostly clear. Humid with lows in the lower 80s. Southwest winds 10 to 15 mph. Heat index values up to 106 early. .SUNDAY...Sunny. Highs in the lower 90s. Heat index values up to 105. .SUNDAY NIGHT...Mostly clear. Lows in the lower 80s. .MONDAY...Sunny. Highs in the lower 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the mid 80s. .TUESDAY...Sunny. Highs in the lower 90s. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear. Lows in the mid 80s. .WEDNESDAY...Sunny. Highs in the lower 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 80s. .THURSDAY...Sunny. Highs around 90. Heat index values up to 105. $$ TXZ439-210500- Bolivar Peninsula- 433 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY... .TONIGHT...Partly cloudy. Lows in the lower 80s. Southwest winds 10 to 15 mph. Heat index values up to 105 early. .FRIDAY...Sunny with highs in the lower 90s. West winds 5 to 10 mph, becoming southwest 10 to 15 mph in the afternoon. Heat index values up to 111. .FRIDAY NIGHT...Partly cloudy. Humid with lows in the lower 80s. Southwest winds 10 to 15 mph. Heat index values up to 107 early. .SATURDAY...Mostly sunny. Humid with highs in the lower 90s. West winds 5 to 10 mph, becoming southwest 10 to 15 mph in the afternoon. Heat index values up to 111. .SATURDAY NIGHT...Mostly clear. Humid with lows in the lower 80s. Southwest winds 10 to 15 mph. Heat index values up to 107 early. .SUNDAY...Sunny. Highs in the lower 90s. Heat index values up to 110. .SUNDAY NIGHT...Mostly clear. Lows in the lower 80s. Heat index values up to 105 early. .MONDAY...Sunny. Highs in the lower 90s. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Lows in the lower 80s. Heat index values up to 105 early. .TUESDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 110. .TUESDAY NIGHT...Mostly clear. Lows in the lower 80s. Heat index values up to 105 early. .WEDNESDAY...Sunny. Highs in the lower 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 80s. Heat index values up to 105 early. .THURSDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 110. $$