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Fossil Lake, MT Weather Forecast

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Fossil Lake, MT Weather Forecast

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Fossil Lake MT weather - Clear - 68°F
Clear
68°F
Updated 5:12 pm
Feels Like 41°F
Humidity 22%
Wind W 14 mph
Barometer  29.97 in
Dew Point 28°F
Fossil Lake MT weather - Clear - 20°C
Clear
20°C
Updated 5:12 pm
Feels Like 5°C
Humidity 22%
Wind W 23 km/h
Barometer  101.5 kPa
Dew Point -2°C
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Fossil Lake Weather Forecast

TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY
Fossil Lake, MT Weather - Tonight Mostly Cloudy Fossil Lake, MT Weather - Sunday Chance Of Showers Fossil Lake, MT Weather - Sunday Night Chance Of Showers Fossil Lake, MT Weather - Monday Chance Of T-Storm Fossil Lake, MT Weather - Monday Night Chance Of Showers Fossil Lake, MT Weather - Tuesday Patchy Fog Fossil Lake, MT Weather - Tuesday Night Mostly Clear Fossil Lake, MT Weather - Wednesday Sunny Fossil Lake, MT Weather - Wednesday Night Mostly Clear Fossil Lake, MT Weather - Thursday Sunny Fossil Lake, MT Weather - Thursday Night Partly Cloudy Fossil Lake, MT Weather - Friday Mostly Sunny
Mostly Cloudy Chance of Showers Chance of Showers Chance of T-Storm Chance of Showers Patchy Fog Mostly Clear Sunny Mostly Clear Sunny Partly Cloudy Mostly Sunny
Lo: 35°FLo: 2°C Hi: 65°FHi: 18°C
 Lo: 35°FLo: 2°C Hi: 60°FHi: 16°C
 Lo: 29°FLo: -2°C Hi: 65°FHi: 18°C
 Lo: 31°FLo: -1°C Hi: 65°FHi: 18°C
 Lo: 31°FLo: -1°C Hi: 65°FHi: 18°C
 Lo: 35°FLo: 2°C Hi: 65°FHi: 18°C
POP: 40% POP: 40% POP: 80% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 350 PM MDT Sat Sep 26 2026 Fossil Lake, MT Weather - WeatherWorld.com

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Fossil Lake Forecast Discussion

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Issued: 444 PM MDT Sat Sep 26 2026

Key Messages

  • Unsettled conditions Sunday into Monday will keep seasonable temperatures around and introduce small to moderate chances for precipitation.
  • A few strong storms are possible Sunday evening into the overnight hours across southeast MT. Main threats will be heavy rain, small hail and gusty winds.

Discussion

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Today through Friday...

Following the shortwave and associated cold front that moved through this morning, increasing southwest flow is expected into Sunday. Although models keep wit...