Hourly Weather Forecast - Lewistown, MT

12 AM
28°F
30%
12mph
W
30% Chance of Snow
Humidity
67%
Feels like
18°F
Dew Point
19°F
1 AM
27°F
10%
11mph
W
Mostly Cloudy
Humidity
68%
Feels like
16°F
Dew Point
18°F
2 AM
25°F
10%
11mph
W
Mostly Cloudy
Humidity
68%
Feels like
15°F
Dew Point
16°F

Rain And Snow Totals Through Monday

Atmospheric River Impacts Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California through Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

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Today's Weather Outlook

Today's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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