Hourly Weather Forecast - Lewistown, MT

12 AM
42°F
10%
12mph
WSW
Partly Cloudy
Humidity
59%
Feels like
35°F
Dew Point
29°F
1 AM
40°F
10%
12mph
WSW
Mostly Cloudy
Humidity
63%
Feels like
32°F
Dew Point
28°F
2 AM
37°F
20%
11mph
WSW
Cloudy
Humidity
64%
Feels like
30°F
Dew Point
26°F
3 AM
35°F
20%
11mph
W
Mostly Cloudy
Humidity
66%
Feels like
27°F
Dew Point
25°F
4 AM
33°F
20%
10mph
W
Mostly Clear
Humidity
72%
Feels like
25°F
Dew Point
25°F
5 AM
31°F
20%
10mph
WNW
Clear
Humidity
74%
Feels like
23°F
Dew Point
24°F
6 AM
31°F
20%
10mph
WNW
Clear
Humidity
74%
Feels like
22°F
Dew Point
23°F
7 AM
32°F
10%
10mph
WNW
Partly Cloudy
Humidity
72%
Feels like
23°F
Dew Point
24°F
8 AM
34°F
20%
10mph
WNW
Partly Cloudy
Humidity
68%
Feels like
26°F
Dew Point
24°F
8:02 AM
9 AM
37°F
30%
10mph
WNW
30% Chance Rain Showers
Humidity
64%
Feels like
30°F
Dew Point
26°F
10 AM
39°F
30%
10mph
W
30% Chance of Light Rain
Humidity
60%
Feels like
33°F
Dew Point
27°F
11 AM
41°F
30%
10mph
W
30% Chance of Light Rain
Humidity
56%
Feels like
35°F
Dew Point
27°F
12 PM
42°F
20%
11mph
W
Cloudy
Humidity
51%
Feels like
36°F
Dew Point
25°F
1 PM
42°F
10%
11mph
WSW
Cloudy
Humidity
48%
Feels like
36°F
Dew Point
24°F
2 PM
41°F
10%
11mph
WSW
Cloudy
Humidity
50%
Feels like
35°F
Dew Point
24°F
3 PM
40°F
10%
10mph
SW
Cloudy
Humidity
55%
Feels like
33°F
Dew Point
25°F
4 PM
38°F
10%
9mph
SW
Cloudy
Humidity
60%
Feels like
31°F
Dew Point
25°F
4:33 PM
5 PM
36°F
30%
9mph
SSW
30% Chance of Flurries
Humidity
69%
Feels like
29°F
Dew Point
27°F
6 PM
34°F
30%
9mph
SSW
30% Chance of Snow
Humidity
72%
Feels like
27°F
Dew Point
26°F
7 PM
33°F
30%
10mph
SSW
30% Chance of Snow
Humidity
73%
Feels like
26°F
Dew Point
26°F
8 PM
33°F
30%
10mph
SSW
30% Chance of Snow
Humidity
75%
Feels like
25°F
Dew Point
26°F
9 PM
33°F
30%
10mph
SSW
30% Chance of Flurries
Humidity
73%
Feels like
25°F
Dew Point
26°F
10 PM
33°F
10%
10mph
SSW
Cloudy
Humidity
73%
Feels like
25°F
Dew Point
26°F
11 PM
34°F
30%
10mph
SSW
30% Chance of Flurries
Humidity
71%
Feels like
26°F
Dew Point
25°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

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