Hourly Weather Forecast - Lewistown, MT

12 AM
34°F
30%
9mph
SSW
30% Chance of Flurries
Humidity
69%
Feels like
27°F
Dew Point
25°F
1 AM
34°F
20%
9mph
SSW
Mostly Cloudy
Humidity
67%
Feels like
27°F
Dew Point
25°F
2 AM
34°F
30%
9mph
SSW
30% Chance of Flurries
Humidity
68%
Feels like
27°F
Dew Point
25°F
3 AM
34°F
40%
9mph
SW
40% Chance of Flurries
Humidity
69%
Feels like
27°F
Dew Point
25°F
4 AM
34°F
40%
9mph
SW
40% Chance of Flurries
Humidity
70%
Feels like
27°F
Dew Point
25°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

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

NOAA, NCDC

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Weekend Weather Outlook

Weekend 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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