Hourly Weather Forecast - Lewistown, MT

12 AM
34°F
10%
9mph
SSE
Mostly Clear
Humidity
87%
Feels like
27°F
Dew Point
30°F
1 AM
36°F
10%
9mph
SSE
Partly Cloudy
Humidity
80%
Feels like
29°F
Dew Point
30°F
2 AM
37°F
10%
9mph
SSE
Mostly Cloudy
Humidity
72%
Feels like
31°F
Dew Point
29°F
3 AM
39°F
10%
9mph
SSE
Mostly Cloudy
Humidity
67%
Feels like
33°F
Dew Point
29°F
4 AM
40°F
10%
9mph
SSE
Partly Cloudy
Humidity
63%
Feels like
34°F
Dew Point
29°F
5 AM
41°F
10%
9mph
SSE
Partly Cloudy
Humidity
60%
Feels like
36°F
Dew Point
29°F
6 AM
43°F
10%
9mph
SSE
Partly Cloudy
Humidity
57%
Feels like
37°F
Dew Point
28°F
7 AM
44°F
0%
10mph
S
Mostly Clear
Humidity
55%
Feels like
39°F
Dew Point
29°F
8 AM
46°F
0%
10mph
S
Clear
Humidity
53%
Feels like
41°F
Dew Point
30°F
8:02 AM
9 AM
48°F
0%
11mph
S
Mostly Sunny
Humidity
51%
Feels like
44°F
Dew Point
31°F
10 AM
51°F
0%
11mph
S
Mostly Sunny
Humidity
49%
Feels like
51°F
Dew Point
33°F
11 AM
54°F
0%
11mph
S
Partly Cloudy
Humidity
44%
Feels like
54°F
Dew Point
32°F
12 PM
56°F
0%
12mph
S
Partly Cloudy
Humidity
38%
Feels like
56°F
Dew Point
31°F
1 PM
56°F
10%
13mph
SSW
Partly Cloudy
Humidity
36%
Feels like
56°F
Dew Point
30°F
2 PM
56°F
10%
15mph
SSW
Cloudy
Humidity
37%
Feels like
56°F
Dew Point
30°F
3 PM
54°F
10%
15mph
SSW
Cloudy
Humidity
41%
Feels like
54°F
Dew Point
31°F
4 PM
52°F
10%
14mph
SSW
Cloudy
Humidity
45%
Feels like
52°F
Dew Point
31°F
4:32 PM
5 PM
51°F
10%
14mph
SSW
Cloudy
Humidity
51%
Feels like
51°F
Dew Point
33°F
6 PM
50°F
10%
14mph
SSW
Mostly Cloudy
Humidity
53%
Feels like
45°F
Dew Point
33°F
7 PM
48°F
10%
14mph
SW
Partly Cloudy
Humidity
54%
Feels like
43°F
Dew Point
33°F
8 PM
47°F
10%
14mph
SW
Mostly Clear
Humidity
56%
Feels like
42°F
Dew Point
33°F
9 PM
46°F
10%
13mph
SW
Clear
Humidity
58%
Feels like
40°F
Dew Point
32°F
10 PM
45°F
20%
14mph
WSW
Clear
Humidity
60%
Feels like
39°F
Dew Point
32°F
11 PM
44°F
20%
13mph
WSW
Clear
Humidity
59%
Feels like
37°F
Dew Point
30°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