Hourly Weather Forecast - Lewistown, MT

3 PM
38°F
10%
9mph
SSE
Cloudy
Humidity
52%
Feels like
32°F
Dew Point
22°F
4 PM
36°F
20%
9mph
SSE
Cloudy
Humidity
62%
Feels like
30°F
Dew Point
24°F
4:30 PM
5 PM
35°F
20%
9mph
SSE
Cloudy
Humidity
73%
Feels like
28°F
Dew Point
27°F
6 PM
34°F
20%
8mph
SSE
Cloudy
Humidity
83%
Feels like
27°F
Dew Point
29°F
7 PM
33°F
30%
8mph
S
30% Chance of Light Rain
Humidity
87%
Feels like
27°F
Dew Point
30°F
8 PM
33°F
30%
8mph
SSW
30% Chance of Light Rain
Humidity
91%
Feels like
26°F
Dew Point
31°F
9 PM
33°F
10%
8mph
S
Cloudy
Humidity
92%
Feels like
26°F
Dew Point
31°F
10 PM
33°F
10%
8mph
S
Cloudy
Humidity
94%
Feels like
26°F
Dew Point
32°F
11 PM
34°F
10%
8mph
S
Mostly Cloudy
Humidity
91%
Feels like
27°F
Dew Point
31°F

Travel Outlook for Monday, December 22

Christmas Travel Outlook: Plenty of Travel Headaches Across The West

Christmas is quickly approaching, and we have the scoop on the travel forecast.

Rain And Snow Totals Through Monday

Atmospheric River Impacts Northern California

NOAA, NCDC

White Christmas? What Are The Odds

Monday's Weather Outlook

Monday'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.

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide