Zone Forecast Product
Issued by NWS Missoula, MT

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586
FPUS55 KMSO 182031
ZFPMSO

Zone Forecast Product
National Weather Service Missoula MT
230 PM MDT Mon Aug 18 2025

MTZ001-191000-
Kootenai/Cabinet Region-
Including the cities of Libby and Eureka
230 PM MDT Mon Aug 18 2025

.TONIGHT...Partly cloudy. A 20 percent chance of rain after
midnight. Lows in the upper 40s to mid 50s.
.TUESDAY...Mostly sunny. Highs in the upper 80s to mid 90s.
.TUESDAY NIGHT...Partly cloudy. Lows in the 50s.
.WEDNESDAY...Mostly sunny. Highs in the 80s to lower 90s.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s to lower
50s.
.THURSDAY...Mostly sunny. Highs in the 80s to lower 90s.
.THURSDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.FRIDAY...Sunny. Highs in the mid 80s to lower 90s.
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.SATURDAY...Mostly sunny. Highs in the 90s.
.SATURDAY NIGHT...Mostly clear. Lows in the 50s.
.SUNDAY...Mostly sunny. Highs in the 90s.
.SUNDAY NIGHT...Mostly clear. Lows in the 50s.
.MONDAY...Mostly sunny. Highs in the upper 80s to mid 90s.

$$

MTZ002-191000-
West Glacier Region-
Including the city of Swan Lake
230 PM MDT Mon Aug 18 2025

.TONIGHT...Mostly clear. A 20 percent chance of rain after
midnight. Lows in the 50s.
.TUESDAY...Mostly sunny. Highs in the upper 70s to mid 80s.
.TUESDAY NIGHT...Partly cloudy with a 20 percent chance of
showers and thunderstorms. Lows in the mid 50s to lower 60s.
.WEDNESDAY...Mostly sunny. Highs in the mid 70s to lower 80s.
Southwest winds to 15 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s to mid
50s. West winds to 15 mph.
.THURSDAY...Mostly sunny. Highs in the 70s.
.THURSDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.FRIDAY...Sunny. Highs in the mid 70s to lower 80s.
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.SATURDAY...Mostly sunny. Highs in the upper 70s to mid 80s.
.SATURDAY NIGHT...Mostly clear. Lows in the 50s.
.SUNDAY...Mostly sunny. Highs in the upper 70s to mid 80s.
.SUNDAY NIGHT...Mostly clear. Lows in the 50s to lower 60s.
.MONDAY...Mostly sunny. Highs in the upper 70s to mid 80s.

$$

MTZ003-191000-
Flathead/Mission Valleys-
Including the cities of Kalispell, Polson, and St. Ignatius
230 PM MDT Mon Aug 18 2025

.TONIGHT...Mostly clear. Lows in the 50s.
.TUESDAY...Mostly sunny. Highs in the mid 80s to lower 90s.
.TUESDAY NIGHT...Partly cloudy with a 20 percent chance of
showers and thunderstorms. Lows in the 50s.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s to lower 90s.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s to mid
50s.
.THURSDAY...Sunny. Highs in the 80s.
.THURSDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.FRIDAY...Sunny. Highs in the 80s to lower 90s.
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.SATURDAY...Mostly sunny. Highs in the mid 80s to lower 90s.
.SATURDAY NIGHT...Mostly clear. Lows in the 50s.
.SUNDAY...Mostly sunny. Highs in the upper 80s to mid 90s.
.SUNDAY NIGHT...Mostly clear. Lows in the 50s.
.MONDAY...Mostly sunny. Highs in the upper 80s to mid 90s.

$$

MTZ004-191000-
Lower Clark Fork Region-
Including the cities of Noxon, Thompson Falls, and Superior
230 PM MDT Mon Aug 18 2025

.TONIGHT...Mostly clear. A 20 percent chance of rain after
midnight. Lows in the 50s.
.TUESDAY...Mostly sunny. Highs in the upper 80s to mid 90s.
.TUESDAY NIGHT...Partly cloudy. Chance of rain showers and a
slight chance of thunderstorms in the evening, then slight chance
of rain after midnight. Chance of precipitation 30 percent. Lows
in the 50s to lower 60s.
.WEDNESDAY...Mostly sunny. Highs in the 80s.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s to mid
50s.
.THURSDAY...Mostly sunny. Highs in the 80s.
.THURSDAY NIGHT...Clear. Lows in the upper 40s to mid 50s.
.FRIDAY...Sunny. Highs in the mid 80s to lower 90s.
.FRIDAY NIGHT...Mostly clear. Lows in the 50s.
.SATURDAY...Mostly sunny. Highs in the upper 80s to mid 90s.
.SATURDAY NIGHT...Mostly clear. Lows in the 50s to lower 60s.
.SUNDAY...Mostly sunny. Highs in the upper 80s to mid 90s.
.SUNDAY NIGHT...Mostly clear. Lows in the 50s to lower 60s.
.MONDAY...Mostly sunny. Highs in the mid 80s to lower 90s.

$$

MTZ005-191000-
Missoula/Bitterroot Valleys-
Including the cities of Hamilton and Darby
230 PM MDT Mon Aug 18 2025

.TONIGHT...Mostly clear. Lows in the 50s.
.TUESDAY...Mostly sunny. Highs in the lower to mid 90s.
.TUESDAY NIGHT...Mostly cloudy with a chance of rain showers and
a slight chance of thunderstorms in the evening, then partly
cloudy after midnight. Chance of precipitation 40 percent. Lows
in the mid to upper 50s.
.WEDNESDAY...Mostly sunny. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs near 90.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower to mid 50s.
Northwest winds to 15 mph.
.THURSDAY...Mostly sunny. Highs in the mid to upper 80s.
.THURSDAY NIGHT...Clear. Lows near 50.
.FRIDAY...Sunny. Highs near 90.
.FRIDAY NIGHT...Mostly clear. Lows in the lower to mid 50s.
.SATURDAY...Mostly sunny. Highs in the lower 90s.
.SATURDAY NIGHT...Mostly clear. Lows in the mid to upper 50s.
.SUNDAY...Partly cloudy. Highs in the lower 90s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid to upper 50s.
.MONDAY...Partly cloudy. Highs near 90.

$$

MTZ006-191000-
Bitterroot/Sapphire Mountains-
Including the city of Sula
230 PM MDT Mon Aug 18 2025

.TONIGHT...Partly cloudy. Slight chance of showers and
thunderstorms early in the evening, then slight chance of rain
late in the evening. Chance of precipitation 20 percent. Lows in
the upper 40s to mid 50s.
.TUESDAY...Mostly sunny. A 20 percent chance of rain in the
afternoon. Highs in the 80s to lower 90s.
.TUESDAY NIGHT...Mostly cloudy with a chance of rain showers and
a slight chance of thunderstorms in the evening, then partly
cloudy after midnight. Chance of precipitation 40 percent. Lows
in the upper 40s to mid 50s.
.WEDNESDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s to mid
80s.
.WEDNESDAY NIGHT...Mostly clear. A 20 percent chance of showers
and thunderstorms in the evening. Lows in the mid 40s to lower
50s.
.THURSDAY...Mostly sunny. Highs in the mid 70s to lower 80s.
.THURSDAY NIGHT...Clear. Lows in the mid 40s to lower 50s.
.FRIDAY...Sunny. Highs in the upper 70s to mid 80s.
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.SATURDAY...Mostly sunny. Highs in the 80s.
.SATURDAY NIGHT...Partly cloudy. Lows in the 50s.
.SUNDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s to mid
80s.
.SUNDAY NIGHT...Partly cloudy. Lows in the 50s.
.MONDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s to lower
80s.

$$

MTZ007-191000-
Butte/Blackfoot Region-
Including the cities of Anaconda, Deer Lodge, and Drummond
230 PM MDT Mon Aug 18 2025

.TONIGHT...Mostly cloudy early in the evening then clearing.
Slight chance of showers and thunderstorms early in the evening,
then slight chance of rain late in the evening. Chance of
precipitation 20 percent. Lows in the upper 40s to mid 50s.
.TUESDAY...Mostly sunny. A 20 percent chance of rain in the
afternoon. Highs in the mid 80s to lower 90s.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of rain in
the evening. Lows in the upper 40s to mid 50s.
.WEDNESDAY...Partly cloudy. Chance of rain showers and a slight
chance of thunderstorms in the afternoon. Chance of precipitation
40 percent. Highs in the upper 70s to mid 80s.
.WEDNESDAY NIGHT...Partly cloudy. Chance of rain showers and a
slight chance of thunderstorms in the evening. Chance of
precipitation 40 percent. Lows in the mid 40s to lower 50s.
Northwest winds to 15 mph.
.THURSDAY...Mostly sunny. Highs in the mid 70s to lower 80s.
.THURSDAY NIGHT...Mostly clear. Lows in the 40s to lower 50s.
.FRIDAY...Sunny. Highs in the upper 70s to mid 80s.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s.
.SATURDAY...Mostly sunny. Highs in the 80s.
.SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid
50s.
.SUNDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the 80s.
.SUNDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s.
.MONDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s to mid
80s.

$$

MTZ043-191000-
Potomac/Seeley Lake Region-
Including the cities of East Missoula, Seeley Lake, and Clinton
230 PM MDT Mon Aug 18 2025

.TONIGHT...Mostly clear. Slight chance of showers and
thunderstorms early in the evening, then slight chance of rain
late in the evening. Chance of precipitation 20 percent. Lows in
the 50s.
.TUESDAY...Mostly sunny. Highs in the mid 80s to lower 90s.
.TUESDAY NIGHT...Mostly cloudy with a chance of rain showers and
a slight chance of thunderstorms in the evening, then partly
cloudy with a slight chance of rain after midnight. Chance of
precipitation 30 percent. Lows in the 50s.
.WEDNESDAY...Mostly sunny. Highs in the 80s.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s to mid
50s.
.THURSDAY...Mostly sunny. Highs in the upper 70s to mid 80s.
.THURSDAY NIGHT...Clear. Lows in the mid 40s to lower 50s.
.FRIDAY...Sunny. Highs in the 80s.
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.SATURDAY...Mostly sunny. Highs in the 80s to lower 90s.
.SATURDAY NIGHT...Mostly clear. Lows in the 50s.
.SUNDAY...Mostly sunny. Highs in the mid 80s to lower 90s.
.SUNDAY NIGHT...Partly cloudy. Lows in the 50s.
.MONDAY...Partly cloudy. Highs in the 80s.

$$

IDZ009-191000-
Western Lemhi County-
Including the city of Shoup
230 PM MDT Mon Aug 18 2025

.TONIGHT...Partly cloudy. Lows in the mid 50s to lower 60s.
.TUESDAY...Mostly sunny. Highs in the mid 80s to lower 90s.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of rain in
the evening. Lows in the mid 50s to lower 60s.
.WEDNESDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the 80s.
.WEDNESDAY NIGHT...Mostly clear. A 20 percent chance of showers
and thunderstorms in the evening. Lows in the 50s.
.THURSDAY...Sunny. Highs in the 80s.
.THURSDAY NIGHT...Clear. Lows in the 50s.
.FRIDAY...Sunny. Highs in the mid 80s to lower 90s.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 50s to lower 60s.
.SATURDAY...Mostly sunny. Highs in the mid 80s to lower 90s.
.SATURDAY NIGHT...Partly cloudy. Lows in the upper 50s to mid
60s.
.SUNDAY...Partly cloudy. Highs in the 80s to lower 90s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s to lower 60s.
.MONDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the 80s.

$$

IDZ010-191000-
Eastern Lemhi County-
Including the cities of Salmon and Leadore
230 PM MDT Mon Aug 18 2025

.TONIGHT...Mostly cloudy early in the evening then clearing.
Slight chance of showers and thunderstorms early in the evening,
then slight chance of rain late in the evening. Chance of
precipitation 20 percent. Lows in the 50s. Southwest winds to
15 mph in the evening.
.TUESDAY...Mostly sunny. Highs in the mid 80s to lower 90s. South
winds 15 to 20 mph.
.TUESDAY NIGHT...Partly cloudy. Lows in the 50s. Southwest winds
15 to 20 mph.
.WEDNESDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the 80s. West winds to
15 mph.
.WEDNESDAY NIGHT...Mostly clear. A 20 percent chance of showers
and thunderstorms in the evening. Lows in the upper 40s to mid
50s. Northwest winds to 15 mph.
.THURSDAY...Mostly sunny. Highs in the upper 70s to mid 80s.
.THURSDAY NIGHT...Clear. Lows in the mid 40s to lower 50s.
.FRIDAY...Sunny. Highs in the 80s to lower 90s.
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.SATURDAY...Mostly sunny. Highs in the mid 80s to lower 90s.
.SATURDAY NIGHT...Partly cloudy. Lows in the 50s.
.SUNDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the 80s.
.SUNDAY NIGHT...Mostly cloudy with a 20 percent chance of rain in
the evening, then partly cloudy after midnight. Lows in the 50s.
.MONDAY...Partly cloudy. A 20 percent chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s to mid
80s.

$$

IDZ005-191000-
Northern Clearwater Mountains-
Including the cities of Pierce and Elk River
130 PM PDT Mon Aug 18 2025

.TONIGHT...Mostly clear. Lows in the mid 40s to lower 50s.
.TUESDAY...Mostly sunny. Highs in the mid 80s to lower 90s.
.TUESDAY NIGHT...Mostly clear. A 20 percent chance of showers and
thunderstorms in the evening. Lows in the mid 40s to lower 50s.
.WEDNESDAY...Sunny. Highs in the 80s.
.WEDNESDAY NIGHT...Clear. Lows in the mid 40s to lower 50s.
.THURSDAY...Sunny. Highs in the 80s.
.THURSDAY NIGHT...Clear. Lows in the 40s to lower 50s.
.FRIDAY...Sunny. Highs in the upper 80s to mid 90s.
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s.
.SATURDAY...Mostly sunny. Highs in the 90s.
.SATURDAY NIGHT...Mostly clear. Lows in the 50s.
.SUNDAY...Mostly sunny. Highs in the upper 80s to mid 90s.
.SUNDAY NIGHT...Mostly clear. Lows in the 50s.
.MONDAY...Mostly sunny. Highs in the mid 80s to lower 90s.

$$

IDZ006-191000-
Southern Clearwater Mountains-
Including the cities of Powell, Elk City, and Dixie
130 PM PDT Mon Aug 18 2025

.TONIGHT...Mostly clear. Patchy fog late in the night. Lows 43 to
58.
.TUESDAY...Sunny. Patchy fog in the morning. Highs 79 to 94.
.TUESDAY NIGHT...Partly cloudy. Chance of rain showers and a
slight chance of thunderstorms in the evening. Chance of
precipitation 30 percent. Lows 44 to 59.
.WEDNESDAY...Mostly sunny. Highs 73 to 88.
.WEDNESDAY NIGHT...Mostly clear. Lows 42 to 57.
.THURSDAY...Sunny. Highs 75 to 89.
.THURSDAY NIGHT...Clear. Lows 42 to 57.
.FRIDAY...Sunny. Highs 81 to 96.
.FRIDAY NIGHT...Mostly clear. Lows 46 to 61.
.SATURDAY...Mostly sunny. Highs 84 to 99.
.SATURDAY NIGHT...Partly cloudy. Lows 49 to 64.
.SUNDAY...Mostly sunny. Highs 82 to 97.
.SUNDAY NIGHT...Partly cloudy. Lows 48 to 63.
.MONDAY...Mostly sunny. Highs 78 to 93.

$$

IDZ007-191000-
Orofino/Grangeville Region-
Including the city of Kooskia
130 PM PDT Mon Aug 18 2025

.TONIGHT...Mostly clear. Lows in the mid 50s to lower 60s.
.TUESDAY...Mostly sunny. Highs in the 80s to mid 90s.
.TUESDAY NIGHT...Mostly clear. A 20 percent chance of rain in the
evening. Lows in the mid 50s to lower 60s.
.WEDNESDAY...Sunny. Highs in the 80s to lower 90s.
.WEDNESDAY NIGHT...Clear. Lows in the 50s to lower 60s.
.THURSDAY...Sunny. Highs in the 80s to lower 90s.
.THURSDAY NIGHT...Clear. Lows in the 50s to lower 60s.
.FRIDAY...Sunny. Highs in the 80s to upper 90s.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 50s to lower 60s.
.SATURDAY...Mostly sunny. Highs 92 to 102.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s to mid 60s.
.SUNDAY...Mostly sunny. Highs in the 90s.
.SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s to mid 60s.
.MONDAY...Mostly sunny. Highs in the 80s to upper 90s.

$$

IDZ008-191000-
Lower Hells Canyon/Salmon River Region-
Including the cities of Riggins and White Bird
130 PM PDT Mon Aug 18 2025

.TONIGHT...Mostly clear. Lows in the upper 50s to mid 60s.
.TUESDAY...Sunny, hot. Highs in the 80s to upper 90s.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 50s to mid 60s.
.WEDNESDAY...Sunny. Highs 81 to 94.
.WEDNESDAY NIGHT...Clear. Lows in the mid 50s to lower 60s.
.THURSDAY...Sunny. Highs 81 to 94.
.THURSDAY NIGHT...Clear. Lows in the upper 50s to mid 60s.
.FRIDAY...Sunny. Highs 87 to 100.
.FRIDAY NIGHT...Mostly clear. Lows in the 60s to lower 70s.
.SATURDAY...Mostly sunny. Highs 90 to 103.
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 60s to lower
70s.
.SUNDAY...Mostly sunny. Highs 88 to 101.
.SUNDAY NIGHT...Partly cloudy. Lows in the 60s to lower 70s.
.MONDAY...Mostly sunny. Highs 85 to 98.

$$