Zone Forecast Product
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
139 FPUS55 KBOU 171008 ZFPBOU Zone Forecast Product for Northeast Colorado National Weather Service Denver/Boulder CO 407 AM MDT Sun Aug 17 2025 COZ038-180300- Larimer County Below 6000 Feet/Northwest Weld County- Including Fort Collins, Hereford, Loveland, and Nunn 407 AM MDT Sun Aug 17 2025 .TODAY...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs 87 to 93. Northwest winds 10 to 15 mph in the morning, becoming light. Chance of precipitation 20 percent. .TONIGHT...Mostly clear. Lows near 60. .MONDAY...Mostly sunny. Slight chance of thunderstorms in the afternoon. Highs 88 to 94. Chance of precipitation 20 percent. .MONDAY NIGHT...Mostly clear. Lows in the mid 50s to lower 60s. .TUESDAY...Mostly sunny. Highs 88 to 94. .TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows near 60. Highs 90 to 98. .THURSDAY NIGHT...Partly cloudy. Lows 57 to 63. .FRIDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs 82 to 88. .FRIDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows 54 to 60. .SATURDAY...Showers likely and chance of thunderstorms. Highs 80 to 86. Chance of rain 60 percent. $$ COZ039-180300- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Arvada, Boulder, Golden, Lakewood, and Longmont 407 AM MDT Sun Aug 17 2025 .TODAY...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs near 90. Chance of precipitation 20 percent. .TONIGHT...Partly cloudy. Lows in the lower to mid 60s. .MONDAY...Mostly sunny. Slight chance of thunderstorms in the afternoon. Highs near 90. Chance of precipitation 20 percent. .MONDAY NIGHT...Mostly clear. Lows near 60. .TUESDAY...Mostly sunny. Highs in the lower to mid 90s. .TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows 60 to 65. Highs 92 to 98. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. .FRIDAY...Partly cloudy with a 50 percent chance of thunderstorms. Highs in the mid to upper 80s. .FRIDAY NIGHT...Partly cloudy with a 40 percent chance of thunderstorms. Lows near 60. .SATURDAY...Showers likely and chance of thunderstorms. Highs in the 80s. Chance of rain 60 percent. $$ COZ040-180300- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, and Parker 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs in the lower 90s. .TONIGHT...Partly cloudy. Lows in the lower to mid 60s. .MONDAY...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 20 percent. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. .TUESDAY...Mostly sunny. Highs in the lower to mid 90s. .TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows in the 60s. Highs 93 to 99. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Highs in the upper 80s. Lows around 60. .SATURDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs in the mid 80s. $$ COZ041-180300- Elbert/Central and East Douglas Counties Above 6000 Feet- Including Castle Rock, Elbert, Fondis, Kiowa, and Larkspur 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Slight chance of thunderstorms late in the afternoon. Highs 84 to 90. Chance of precipitation 20 percent. .TONIGHT...Partly cloudy. Lows near 60. .MONDAY...Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 84 to 90. Chance of precipitation 40 percent. .MONDAY NIGHT...Mostly clear. Lows in the mid 50s to lower 60s. .TUESDAY...Mostly sunny with a 10 percent chance of thunderstorms. Highs 85 to 91. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows 57 to 63. Highs 86 to 92. .WEDNESDAY NIGHT...Clear. Lows 57 to 63. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 89 to 95. Lows near 60. .FRIDAY AND FRIDAY NIGHT...Partly cloudy with a 40 percent chance of thunderstorms. Highs in the 80s. Lows in the mid to upper 50s. .SATURDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs in the lower to mid 80s. $$ COZ043-180300- Central and South Weld County- Including Eaton, Fort Lupton, Greeley, and Roggen 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs in the mid 90s. .TONIGHT...Mostly clear. Lows near 60. .MONDAY...Mostly sunny. Slight chance of thunderstorms in the afternoon. Highs in the mid 90s. Chance of precipitation 20 percent. .MONDAY NIGHT...Mostly clear. Lows in the mid 50s to lower 60s. .TUESDAY...Mostly sunny. Highs in the mid 90s. .TUESDAY NIGHT...Mostly clear. Lows near 60. .WEDNESDAY...Sunny. Highs in the upper 90s. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows near 60. Highs in the upper 90s. .THURSDAY NIGHT...Partly cloudy. Lows near 60. .FRIDAY AND FRIDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Highs near 90. Lows in the mid to upper 50s. .SATURDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs in the upper 80s. $$ COZ042-180300- Northeast Weld County- Including Briggsdale, Grover, Pawnee Buttes, Raymer, and Stoneham 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Slight chance of thunderstorms late in the afternoon. Highs in the lower to mid 90s. Chance of precipitation 10 percent. .TONIGHT...Mostly clear. Lows near 60. .MONDAY...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs in the lower to mid 90s. Chance of precipitation 20 percent. .MONDAY NIGHT...Mostly clear. Lows in the mid to upper 50s. .TUESDAY...Sunny. Highs in the lower to mid 90s. .TUESDAY NIGHT...Mostly clear. Lows near 60. .WEDNESDAY AND WEDNESDAY NIGHT...Clear. Highs in the lower to mid 90s. Lows near 60. .THURSDAY...Mostly sunny. Highs in the mid to upper 90s. .THURSDAY NIGHT...Partly cloudy. Lows near 60. .FRIDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 84 to 90. .FRIDAY NIGHT...Partly cloudy with a 40 percent chance of thunderstorms. Lows in the mid 50s. .SATURDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs in the lower to mid 80s. $$ COZ044-180300- Morgan County- Including Brush, Fort Morgan, Goodrich, and Wiggins 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs in the mid 90s. .TONIGHT...Mostly clear. Lows around 60. .MONDAY...Partly cloudy. Chance of thunderstorms in the afternoon. Highs in the mid 90s. Chance of precipitation 30 percent. .MONDAY NIGHT...Mostly clear. Lows in the upper 50s. .TUESDAY...Sunny. Highs in the mid 90s. .TUESDAY NIGHT...Mostly clear. Lows in the lower 60s. .WEDNESDAY THROUGH THURSDAY...Clear. Highs in the mid to upper 90s. Lows in the lower to mid 60s. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the lower 90s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy with a 40 percent chance of thunderstorms. Lows in the mid 50s to lower 60s. Highs in the upper 80s. $$ COZ045-180300- Central and East Adams and Arapahoe Counties- Including Bennett, Byers, Deer Trail, and Leader 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs in the lower 90s. .TONIGHT...Mostly clear. Lows in the lower 60s. .MONDAY...Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 30 percent. .MONDAY NIGHT...Mostly clear. Lows around 60. .TUESDAY...Mostly sunny. Highs in the lower 90s. .TUESDAY NIGHT...Mostly clear. Lows in the lower to mid 60s. .WEDNESDAY THROUGH THURSDAY...Clear. Highs in the mid to upper 90s. Lows in the lower to mid 60s. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Highs around 90. Lows in the upper 50s. .SATURDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs in the upper 80s. $$ COZ048-180300- Logan County- Including Crook, Merino, Sterling, and Peetz 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs in the lower to mid 90s. .TONIGHT...Mostly clear. Lows around 60. .MONDAY...Mostly sunny. Slight chance of thunderstorms in the afternoon. Highs in the lower to mid 90s. Chance of precipitation 20 percent. .MONDAY NIGHT...Mostly clear with a 20 percent chance of thunderstorms. Lows in the upper 50s. .TUESDAY...Sunny. Highs in the lower to mid 90s. .TUESDAY NIGHT THROUGH THURSDAY...Clear. Lows in the lower 60s. Highs 91 to 99. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid 80s to lower 90s. .FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows in the upper 50s. .SATURDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs in the 80s. $$ COZ049-180300- Washington County- Including Akron, Cope, Last Chance, and Otis 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs in the lower 90s. .TONIGHT...Mostly clear. Lows in the lower 60s. .MONDAY...Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs in the mid 90s. Southeast winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of precipitation 30 percent. .MONDAY NIGHT...Mostly clear with a 20 percent chance of thunderstorms. Lows in the upper 50s. Southeast winds 10 to 15 mph with gusts up to 20 mph. .TUESDAY...Mostly sunny. Highs in the lower 90s. Southeast winds 10 to 15 mph with gusts up to 20 mph. .TUESDAY NIGHT...Mostly clear. Lows in the lower 60s. .WEDNESDAY THROUGH THURSDAY...Clear. Highs in the lower to mid 90s. Lows in the lower 60s. .THURSDAY NIGHT...Mostly clear. Lows in the lower 60s. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs around 90. .FRIDAY NIGHT...Partly cloudy with a 40 percent chance of thunderstorms. Lows in the upper 50s. .SATURDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs in the mid 80s. $$ COZ050-180300- Sedgwick County- Including Julesburg, Ovid, and Sedgwick 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs in the mid 90s. .TONIGHT...Mostly clear. Lows in the lower 60s. .MONDAY...Mostly sunny. Slight chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 20 percent. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the upper 50s. .TUESDAY...Mostly sunny. Highs in the lower 90s. .TUESDAY NIGHT...Mostly clear. Lows in the lower 60s. .WEDNESDAY THROUGH THURSDAY...Clear. Highs in the lower to mid 90s. Lows in the lower 60s. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the upper 80s. .FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the upper 50s. .SATURDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid 80s. $$ COZ051-180300- Phillips County- Including Amherst, Haxtun, and Holyoke 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs in the mid 90s. .TONIGHT...Mostly clear. Lows in the lower 60s. .MONDAY...Mostly sunny. Slight chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 10 percent. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the upper 50s. .TUESDAY...Mostly sunny. Highs in the lower 90s. .TUESDAY NIGHT...Mostly clear. Lows around 60. .WEDNESDAY THROUGH THURSDAY...Clear. Highs in the lower to mid 90s. Lows in the lower 60s. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the lower 60s. Highs in the upper 80s. .FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the upper 50s. .SATURDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid 80s. $$ COZ046-180300- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Including Agate, Hugo, Limon, and Matheson 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs around 90. .TONIGHT...Mostly clear. Lows near 60. .MONDAY...Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs near 90. Chance of precipitation 30 percent. .MONDAY NIGHT...Mostly clear with a 20 percent chance of thunderstorms. Lows in the mid 50s to lower 60s. .TUESDAY...Mostly sunny. Highs around 90. .TUESDAY NIGHT...Mostly clear. Lows near 60. .WEDNESDAY THROUGH THURSDAY...Clear. Highs in the lower to mid 90s. Lows 57 to 63. .THURSDAY NIGHT...Mostly clear. Lows near 60. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the upper 80s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy with a 30 percent chance of thunderstorms. Lows in the mid 50s to lower 60s. Highs in the mid 80s. $$ COZ047-180300- Southeast Elbert County Below 6000 Feet/South Lincoln County- Including Forder, Karval, Kutch, and Punkin Center 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny. Highs near 90. .TONIGHT...Mostly clear. Lows in the upper 50s. .MONDAY...Mostly sunny. Slight chance of thunderstorms in the afternoon. Highs in the lower to mid 90s. East winds 10 to 15 mph in the afternoon. Chance of precipitation 20 percent. .MONDAY NIGHT...Mostly clear with a 20 percent chance of thunderstorms. Lows in the mid 50s to lower 60s. .TUESDAY...Mostly sunny. Highs near 90. East winds 10 to 15 mph with gusts up to 20 mph. .TUESDAY NIGHT...Mostly clear. Lows near 60. .WEDNESDAY THROUGH THURSDAY...Clear. Highs in the lower 90s. Lows in the mid 50s to lower 60s. .THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows in the upper 50s. Highs near 90. .FRIDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows in the mid to upper 50s. .SATURDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs in the mid to upper 80s. Chance of rain 30 percent. $$ COZ035-180300- Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Estes Park, Glendevey, Nederland, and Red Feather Lakes 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny in the morning, then mostly cloudy with a slight chance of thunderstorms early in the afternoon. Mostly cloudy with a chance of thunderstorms late in the afternoon. Highs 75 to 85. West winds 10 to 15 mph in the morning, becoming light. Chance of precipitation 30 percent. .TONIGHT...Partly cloudy. Lows 49 to 59. .MONDAY...Mostly sunny. Slight chance of thunderstorms in the afternoon. Highs 77 to 87. Chance of precipitation 20 percent. .MONDAY NIGHT...Mostly clear. Lows 49 to 59. .TUESDAY...Mostly sunny. Highs 78 to 88. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 51 to 61. Highs 79 to 89. .THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 81 to 91. .THURSDAY NIGHT...Partly cloudy. Lows 50 to 60. .FRIDAY...Thunderstorms likely. Highs 73 to 83. Chance of precipitation 60 percent. .FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows 48 to 58. .SATURDAY...Showers likely and chance of thunderstorms. Highs 72 to 82. Chance of rain 70 percent. $$ COZ036-180300- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny in the morning, then mostly cloudy with a slight chance of thunderstorms early in the afternoon. Mostly cloudy with a chance of thunderstorms late in the afternoon. Highs 76 to 86. Chance of precipitation 40 percent. .TONIGHT...Partly cloudy. Slight chance of showers in the evening. Lows 50 to 60. Chance of rain 10 percent. .MONDAY...Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 76 to 86. Chance of precipitation 50 percent. .MONDAY NIGHT...Mostly clear. Lows 50 to 60. .TUESDAY...Mostly sunny with a 20 percent chance of thunderstorms. Highs 78 to 88. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 52 to 62. Highs 80 to 90. .THURSDAY...Mostly sunny with a 20 percent chance of thunderstorms. Highs 82 to 92. .THURSDAY NIGHT...Partly cloudy. Lows 52 to 62. .FRIDAY...Thunderstorms likely. Highs 75 to 85. Chance of precipitation 60 percent. .FRIDAY NIGHT...Partly cloudy with a 40 percent chance of thunderstorms. Lows 49 to 59. .SATURDAY...Thunderstorms likely. Highs 73 to 83. Chance of precipitation 70 percent. $$ COZ030-180300- Jackson County Below 9000 Feet- Including Gould, North Park, Rand, Spicer, and Walden 407 AM MDT Sun Aug 17 2025 .TODAY...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs in the mid to upper 70s. West winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of precipitation 20 percent. .TONIGHT...Mostly clear. Lows 37 to 43. .MONDAY...Mostly sunny. Highs near 80. .MONDAY NIGHT...Mostly clear. Lows 36 to 46. .TUESDAY...Mostly sunny. Highs in the lower to mid 80s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 39 to 49. Highs in the 80s. .THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the lower to mid 80s. .THURSDAY NIGHT...Partly cloudy with a 10 percent chance of thunderstorms. Lows 41 to 49. .FRIDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs near 80. .FRIDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows 39 to 47. .SATURDAY...Showers likely and chance of thunderstorms. Highs near 80. Chance of rain 60 percent. $$ COZ032-180300- Grand and Summit Counties Below 9000 Feet- Including Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 407 AM MDT Sun Aug 17 2025 .TODAY...Partly cloudy. Slight chance of thunderstorms late in the afternoon. Highs 74 to 80. Chance of precipitation 20 percent. .TONIGHT...Mostly clear. Lows 40 to 46. .MONDAY...Mostly sunny. Highs 75 to 83. .MONDAY NIGHT...Mostly clear. Lows 39 to 49. .TUESDAY...Mostly sunny. Highs 78 to 86. .TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows 42 to 52. Highs 80 to 88. .THURSDAY NIGHT...Partly cloudy. Lows 43 to 53. .FRIDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs 76 to 84. .FRIDAY NIGHT...Mostly cloudy with a 30 percent chance of thunderstorms. Lows 41 to 51. .SATURDAY...Showers likely and chance of thunderstorms. Highs 74 to 82. Chance of rain 60 percent. $$ COZ037-180300- Central and Southeast Park County- Including Fairplay, Hartsel, Lake George, and South Park 407 AM MDT Sun Aug 17 2025 .TODAY...Partly cloudy. Slight chance of thunderstorms early in the afternoon. Chance of thunderstorms late in the afternoon. Highs 71 to 79. Chance of precipitation 30 percent. .TONIGHT...Partly cloudy. Slight chance of thunderstorms in the evening. Lows in the mid 40s to lower 50s. Chance of precipitation 10 percent. .MONDAY...Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 72 to 80. Chance of precipitation 30 percent. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .TUESDAY...Mostly sunny with a 20 percent chance of thunderstorms. Highs 73 to 81. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 45 to 51. Highs 74 to 82. .THURSDAY...Mostly sunny with a 20 percent chance of thunderstorms. Highs 76 to 84. .THURSDAY NIGHT...Partly cloudy with a 10 percent chance of thunderstorms. Lows near 50. .FRIDAY...Thunderstorms likely. Highs 72 to 80. Chance of precipitation 60 percent. .FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows in the mid 40s to lower 50s. .SATURDAY...Showers with thunderstorms likely. Highs 70 to 78. $$ COZ033-180300- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, and Willow Creek Pass 407 AM MDT Sun Aug 17 2025 .TODAY...Partly cloudy. Chance of thunderstorms in the afternoon. Highs 63 to 73. Chance of precipitation 30 percent. .TONIGHT...Mostly clear. Lows 40 to 50. .MONDAY...Mostly sunny. Slight chance of thunderstorms in the afternoon. Highs 65 to 75. Chance of precipitation 10 percent. .MONDAY NIGHT...Mostly clear. Lows 41 to 51. .TUESDAY...Mostly sunny. Highs 68 to 78. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 43 to 53. Highs 69 to 79. .THURSDAY AND THURSDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Highs 70 to 80. Lows 43 to 53. .FRIDAY...Thunderstorms likely. Highs 65 to 75. Chance of precipitation 60 percent. .FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows 41 to 51. .SATURDAY...Rain showers likely and chance of thunderstorms. Highs 63 to 73. Chance of rain 70 percent. $$ COZ034-180300- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Blue Sky, Williams Fork Mountains, and Winter Park 407 AM MDT Sun Aug 17 2025 .TODAY...Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 62 to 72. Chance of precipitation 40 percent. .TONIGHT...Partly cloudy. Slight chance of thunderstorms in the evening. Lows 41 to 51. Chance of precipitation 10 percent. .MONDAY...Partly cloudy. Chance of thunderstorms in the afternoon. Highs 64 to 74. Chance of precipitation 30 percent. .MONDAY NIGHT...Mostly clear. Lows 41 to 51. .TUESDAY...Mostly sunny with a 10 percent chance of thunderstorms. Highs 66 to 76. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 42 to 52. Highs 67 to 77. .THURSDAY AND THURSDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Highs 68 to 78. Lows 43 to 53. .FRIDAY...Thunderstorms likely. Highs 64 to 74. Chance of precipitation 70 percent. .FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows 41 to 51. .SATURDAY...Showers with thunderstorms likely. Highs 62 to 72. $$ COZ031-180300- West Jackson and West Grand Counties Above 9000 Feet- Including Mt Zirkel 407 AM MDT Sun Aug 17 2025 .TODAY...Partly cloudy. Slight chance of thunderstorms late in the afternoon. Highs 66 to 76. West winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of precipitation 20 percent. .TONIGHT...Mostly clear. Lows 42 to 48. .MONDAY...Mostly sunny. Highs 69 to 79. .MONDAY NIGHT...Mostly clear. Lows 42 to 50. .TUESDAY...Mostly sunny. Highs 72 to 82. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 44 to 52. Highs 74 to 84. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 73 to 83. Lows 45 to 53. .FRIDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs 70 to 80. .FRIDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows 44 to 52. .SATURDAY...Showers likely and chance of thunderstorms. Highs 69 to 79. Chance of rain 60 percent. $$