Hourly Weather Forecast - Lewistown, MT

12 AM
31°F
0%
8mph
SSE
Mostly Clear
Humidity
88%
Feels like
24°F
Dew Point
28°F
1 AM
32°F
0%
7mph
SSE
Mostly Clear
Humidity
85%
Feels like
25°F
Dew Point
28°F
2 AM
33°F
0%
7mph
SSE
Partly Cloudy
Humidity
80%
Feels like
26°F
Dew Point
28°F
3 AM
34°F
0%
7mph
SSE
Partly Cloudy
Humidity
77%
Feels like
28°F
Dew Point
27°F
4 AM
35°F
0%
8mph
SSE
Mostly Cloudy
Humidity
74%
Feels like
28°F
Dew Point
28°F
5 AM
37°F
0%
8mph
SSE
Cloudy
Humidity
70%
Feels like
30°F
Dew Point
28°F
6 AM
38°F
0%
9mph
SSE
Cloudy
Humidity
65%
Feels like
32°F
Dew Point
27°F
7 AM
40°F
0%
9mph
SSE
Cloudy
Humidity
63%
Feels like
34°F
Dew Point
28°F
8 AM
41°F
0%
9mph
SE
Mostly Cloudy
Humidity
62%
Feels like
36°F
Dew Point
29°F
8:02 AM
9 AM
44°F
0%
9mph
SE
Partly Cloudy
Humidity
60%
Feels like
39°F
Dew Point
31°F
10 AM
47°F
0%
10mph
SSE
Mostly Sunny
Humidity
57%
Feels like
43°F
Dew Point
33°F
11 AM
51°F
0%
11mph
SSE
Mostly Sunny
Humidity
51%
Feels like
51°F
Dew Point
33°F
12 PM
52°F
0%
10mph
SSE
Partly Cloudy
Humidity
46%
Feels like
52°F
Dew Point
32°F
1 PM
52°F
0%
10mph
SSE
Partly Cloudy
Humidity
45%
Feels like
52°F
Dew Point
31°F
2 PM
50°F
0%
10mph
S
Partly Cloudy
Humidity
48%
Feels like
50°F
Dew Point
31°F
3 PM
47°F
0%
10mph
S
Mostly Cloudy
Humidity
54%
Feels like
42°F
Dew Point
31°F
4 PM
43°F
10%
9mph
SSW
Partly Cloudy
Humidity
62%
Feels like
38°F
Dew Point
31°F
4:32 PM
5 PM
40°F
10%
9mph
SW
Partly Cloudy
Humidity
72%
Feels like
34°F
Dew Point
32°F
6 PM
39°F
10%
8mph
SW
Mostly Cloudy
Humidity
79%
Feels like
33°F
Dew Point
33°F
7 PM
38°F
10%
8mph
WSW
Mostly Cloudy
Humidity
81%
Feels like
32°F
Dew Point
33°F
8 PM
37°F
10%
8mph
WSW
Mostly Cloudy
Humidity
86%
Feels like
31°F
Dew Point
33°F
9 PM
37°F
10%
9mph
W
Cloudy
Humidity
88%
Feels like
30°F
Dew Point
33°F
10 PM
36°F
20%
9mph
WNW
Cloudy
Humidity
92%
Feels like
29°F
Dew Point
34°F
11 PM
34°F
30%
9mph
WNW
30% Chance of Snow
Humidity
94%
Feels like
27°F
Dew Point
33°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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