Hourly Weather Forecast - Lewistown, MT

12 AM
32°F
10%
9mph
S
Mostly Cloudy
Humidity
83%
Feels like
24°F
Dew Point
27°F
1 AM
32°F
10%
9mph
S
Cloudy
Humidity
81%
Feels like
24°F
Dew Point
27°F
2 AM
33°F
30%
9mph
S
30% Chance of Flurries
Humidity
78%
Feels like
25°F
Dew Point
27°F
3 AM
34°F
30%
10mph
SSW
30% Chance of Flurries
Humidity
75%
Feels like
26°F
Dew Point
27°F
4 AM
35°F
30%
10mph
SSW
30% Chance Snow Showers
Humidity
75%
Feels like
27°F
Dew Point
28°F
5 AM
36°F
10%
11mph
SSW
Partly Cloudy
Humidity
73%
Feels like
28°F
Dew Point
28°F
6 AM
37°F
10%
11mph
SSW
Partly Cloudy
Humidity
69%
Feels like
29°F
Dew Point
27°F
7 AM
37°F
10%
10mph
SSW
Partly Cloudy
Humidity
69%
Feels like
29°F
Dew Point
27°F
8 AM
37°F
10%
11mph
SSW
Partly Cloudy
Humidity
69%
Feels like
30°F
Dew Point
28°F
8:02 AM
9 AM
39°F
10%
11mph
SW
Partly Cloudy
Humidity
67%
Feels like
31°F
Dew Point
29°F
10 AM
41°F
10%
13mph
SW
Mostly Cloudy
Humidity
63%
Feels like
34°F
Dew Point
30°F
11 AM
44°F
10%
14mph
SW
Cloudy
Humidity
55%
Feels like
37°F
Dew Point
29°F
12 PM
46°F
10%
15mph
WSW
Cloudy
Humidity
47%
Feels like
39°F
Dew Point
27°F
1 PM
46°F
10%
16mph
WSW
Mostly Cloudy
Humidity
42%
Feels like
39°F
Dew Point
24°F
2 PM
45°F
10%
16mph
WSW
Mostly Cloudy
Humidity
40%
Feels like
38°F
Dew Point
22°F
3 PM
43°F
10%
15mph
WSW
Mostly Cloudy
Humidity
43%
Feels like
36°F
Dew Point
22°F
4 PM
43°F
10%
13mph
WSW
Cloudy
Humidity
43%
Feels like
36°F
Dew Point
22°F
4:33 PM
5 PM
43°F
20%
11mph
SW
Cloudy
Humidity
45%
Feels like
37°F
Dew Point
23°F
6 PM
43°F
20%
12mph
SW
Mostly Cloudy
Humidity
46%
Feels like
37°F
Dew Point
24°F
7 PM
42°F
20%
12mph
SW
Partly Cloudy
Humidity
49%
Feels like
35°F
Dew Point
24°F
8 PM
39°F
20%
13mph
WSW
Mostly Clear
Humidity
53%
Feels like
31°F
Dew Point
24°F
9 PM
37°F
20%
13mph
WSW
Partly Cloudy
Humidity
56%
Feels like
29°F
Dew Point
23°F
10 PM
34°F
20%
13mph
W
Partly Cloudy
Humidity
60%
Feels like
25°F
Dew Point
22°F
11 PM
32°F
30%
12mph
W
30% Chance of Snow
Humidity
62%
Feels like
23°F
Dew Point
20°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

White Christmas? What Are The Odds

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

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide