Hourly Weather Forecast - Lewistown, MT

12 AM
29°F
10%
8mph
SE
Cloudy
Humidity
86%
Feels like
21°F
Dew Point
25°F
1 AM
30°F
10%
8mph
SE
Cloudy
Humidity
86%
Feels like
22°F
Dew Point
26°F
2 AM
31°F
10%
8mph
SSE
Cloudy
Humidity
87%
Feels like
23°F
Dew Point
27°F
3 AM
31°F
10%
8mph
SSE
Cloudy
Humidity
87%
Feels like
24°F
Dew Point
28°F
4 AM
31°F
0%
7mph
SSE
Cloudy
Humidity
92%
Feels like
24°F
Dew Point
29°F
5 AM
32°F
0%
7mph
SSE
Cloudy
Humidity
91%
Feels like
25°F
Dew Point
29°F
6 AM
33°F
0%
8mph
S
Cloudy
Humidity
85%
Feels like
26°F
Dew Point
29°F
7 AM
35°F
0%
8mph
S
Cloudy
Humidity
80%
Feels like
28°F
Dew Point
29°F
8 AM
37°F
0%
8mph
S
Cloudy
Humidity
78%
Feels like
31°F
Dew Point
30°F
8:01 AM
9 AM
38°F
0%
8mph
SSW
Mostly Cloudy
Humidity
77%
Feels like
33°F
Dew Point
32°F
10 AM
41°F
0%
8mph
SSW
Partly Cloudy
Humidity
75%
Feels like
36°F
Dew Point
34°F
11 AM
44°F
0%
7mph
SSW
Partly Cloudy
Humidity
70%
Feels like
39°F
Dew Point
34°F
12 PM
46°F
0%
7mph
SSW
Partly Cloudy
Humidity
61%
Feels like
42°F
Dew Point
34°F
1 PM
47°F
0%
7mph
SW
Partly Cloudy
Humidity
58%
Feels like
44°F
Dew Point
33°F
2 PM
47°F
0%
8mph
SW
Partly Cloudy
Humidity
59%
Feels like
44°F
Dew Point
34°F
3 PM
46°F
0%
8mph
SSW
Mostly Cloudy
Humidity
64%
Feels like
41°F
Dew Point
34°F
4 PM
42°F
0%
8mph
S
Cloudy
Humidity
73%
Feels like
37°F
Dew Point
34°F
4:31 PM
5 PM
39°F
0%
8mph
SSE
Cloudy
Humidity
81%
Feels like
34°F
Dew Point
34°F
6 PM
37°F
0%
8mph
SSE
Mostly Cloudy
Humidity
85%
Feels like
31°F
Dew Point
33°F
7 PM
37°F
0%
8mph
SSE
Partly Cloudy
Humidity
84%
Feels like
30°F
Dew Point
32°F
8 PM
35°F
0%
8mph
SSE
Partly Cloudy
Humidity
87%
Feels like
29°F
Dew Point
32°F
9 PM
34°F
0%
8mph
SSE
Mostly Clear
Humidity
88%
Feels like
28°F
Dew Point
31°F
10 PM
33°F
0%
8mph
SSE
Mostly Clear
Humidity
90%
Feels like
26°F
Dew Point
30°F
11 PM
32°F
0%
8mph
SSE
Mostly Clear
Humidity
90%
Feels like
25°F
Dew Point
29°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

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