Hourly Weather Forecast - Lewistown, MT

2 AM
29°F
0%
10mph
SSW
Partly Cloudy
Humidity
42%
Feels like
20°F
Dew Point
9°F
3 AM
30°F
0%
10mph
SSW
Mostly Clear
Humidity
41%
Feels like
21°F
Dew Point
9°F
4 AM
30°F
0%
10mph
SSW
Partly Cloudy
Humidity
41%
Feels like
21°F
Dew Point
9°F
5 AM
31°F
0%
10mph
SSW
Partly Cloudy
Humidity
40%
Feels like
22°F
Dew Point
9°F
6 AM
32°F
0%
10mph
SSW
Partly Cloudy
Humidity
38%
Feels like
24°F
Dew Point
9°F
7 AM
33°F
0%
9mph
S
Mostly Cloudy
Humidity
40%
Feels like
25°F
Dew Point
11°F
8 AM
34°F
0%
9mph
S
Mostly Cloudy
Humidity
43%
Feels like
26°F
Dew Point
13°F
8:00 AM
9 AM
35°F
0%
9mph
S
Cloudy
Humidity
44%
Feels like
28°F
Dew Point
15°F
10 AM
37°F
0%
8mph
S
Mostly Cloudy
Humidity
44%
Feels like
31°F
Dew Point
17°F
11 AM
39°F
10%
8mph
S
Mostly Cloudy
Humidity
42%
Feels like
33°F
Dew Point
17°F
12 PM
41°F
10%
8mph
S
Mostly Cloudy
Humidity
40%
Feels like
36°F
Dew Point
18°F
1 PM
42°F
20%
8mph
SSE
Mostly Cloudy
Humidity
43%
Feels like
37°F
Dew Point
21°F
2 PM
41°F
30%
8mph
SSE
30% Chance of Light Rain
Humidity
50%
Feels like
36°F
Dew Point
24°F
3 PM
40°F
30%
8mph
SSE
30% Chance of Light Rain
Humidity
59%
Feels like
34°F
Dew Point
26°F
4 PM
37°F
30%
8mph
SSE
30% Chance of Light Rain
Humidity
71%
Feels like
31°F
Dew Point
29°F
4:30 PM
5 PM
35°F
30%
7mph
SSE
30% Chance of Light Rain
Humidity
85%
Feels like
29°F
Dew Point
31°F
6 PM
34°F
30%
7mph
SSE
30% Chance of Light Rain
Humidity
94%
Feels like
28°F
Dew Point
33°F
7 PM
33°F
30%
7mph
S
30% Chance of Light Rain
Humidity
97%
Feels like
27°F
Dew Point
33°F
8 PM
32°F
30%
7mph
S
30% Chance of Flurries
Humidity
100%
Feels like
26°F
Dew Point
32°F
9 PM
31°F
30%
7mph
S
30% Chance of Flurries
Humidity
100%
Feels like
25°F
Dew Point
31°F
10 PM
30°F
10%
7mph
SSE
Foggy
Humidity
100%
Feels like
23°F
Dew Point
30°F
11 PM
30°F
10%
7mph
SSE
Foggy
Humidity
100%
Feels like
23°F
Dew Point
30°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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