Hourly Weather Forecast - Lewistown, MT

12 AM
28°F
0%
8mph
SSE
Cloudy
Humidity
87%
Feels like
20°F
Dew Point
24°F
1 AM
29°F
0%
8mph
SSE
Cloudy
Humidity
86%
Feels like
21°F
Dew Point
25°F
2 AM
29°F
0%
8mph
SSE
Cloudy
Humidity
84%
Feels like
22°F
Dew Point
25°F
3 AM
31°F
10%
8mph
SSE
Cloudy
Humidity
82%
Feels like
23°F
Dew Point
26°F
4 AM
32°F
10%
8mph
SSE
Cloudy
Humidity
80%
Feels like
24°F
Dew Point
26°F
5 AM
33°F
10%
8mph
SSE
Cloudy
Humidity
79%
Feels like
26°F
Dew Point
27°F
6 AM
34°F
10%
8mph
SSE
Cloudy
Humidity
76%
Feels like
27°F
Dew Point
27°F
7 AM
35°F
10%
8mph
S
Cloudy
Humidity
74%
Feels like
29°F
Dew Point
28°F
8 AM
37°F
0%
8mph
S
Mostly Cloudy
Humidity
74%
Feels like
31°F
Dew Point
29°F
8:01 AM
9 AM
39°F
0%
8mph
S
Partly Cloudy
Humidity
72%
Feels like
33°F
Dew Point
31°F
10 AM
41°F
0%
8mph
S
Partly Cloudy
Humidity
69%
Feels like
36°F
Dew Point
32°F
11 AM
44°F
10%
8mph
SSW
Partly Cloudy
Humidity
63%
Feels like
39°F
Dew Point
32°F
12 PM
46°F
10%
8mph
SSW
Mostly Sunny
Humidity
56%
Feels like
42°F
Dew Point
31°F
1 PM
47°F
10%
7mph
SSW
Mostly Sunny
Humidity
54%
Feels like
44°F
Dew Point
31°F
2 PM
46°F
10%
7mph
SSW
Mostly Sunny
Humidity
55%
Feels like
43°F
Dew Point
31°F
3 PM
45°F
10%
6mph
S
Mostly Sunny
Humidity
60%
Feels like
41°F
Dew Point
32°F
4 PM
42°F
10%
7mph
S
Mostly Sunny
Humidity
65%
Feels like
38°F
Dew Point
31°F
4:31 PM
5 PM
40°F
0%
7mph
SSE
Mostly Clear
Humidity
76%
Feels like
36°F
Dew Point
34°F
6 PM
39°F
0%
7mph
SSE
Mostly Clear
Humidity
82%
Feels like
33°F
Dew Point
34°F
7 PM
37°F
10%
8mph
SSE
Mostly Clear
Humidity
83%
Feels like
32°F
Dew Point
33°F
8 PM
36°F
10%
8mph
SSE
Mostly Clear
Humidity
89%
Feels like
30°F
Dew Point
33°F
9 PM
34°F
10%
8mph
SSE
Hazy
Humidity
94%
Feels like
28°F
Dew Point
33°F
10 PM
33°F
10%
8mph
SSE
Hazy
Humidity
98%
Feels like
26°F
Dew Point
33°F
11 PM
33°F
10%
8mph
SSE
Hazy
Humidity
95%
Feels like
26°F
Dew Point
31°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

White Christmas? What Are The Odds

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

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide