Hourly Weather Forecast - Mammoth, MT

12 AM
37°F
10%
28mph
SW
Windy
Humidity
63%
Feels like
25°F
Dew Point
26°F
1 AM
37°F
10%
28mph
SW
Windy
Humidity
64%
Feels like
25°F
Dew Point
26°F
2 AM
37°F
10%
28mph
WSW
Windy
Humidity
66%
Feels like
25°F
Dew Point
27°F
3 AM
37°F
10%
27mph
WSW
Windy
Humidity
67%
Feels like
24°F
Dew Point
27°F
4 AM
36°F
10%
25mph
WSW
Windy
Humidity
68%
Feels like
24°F
Dew Point
27°F
5 AM
36°F
10%
23mph
WSW
Windy
Humidity
69%
Feels like
24°F
Dew Point
27°F
6 AM
35°F
10%
21mph
WSW
Windy
Humidity
71%
Feels like
23°F
Dew Point
27°F
7 AM
34°F
10%
19mph
WSW
Cloudy
Humidity
74%
Feels like
23°F
Dew Point
27°F
8 AM
34°F
10%
18mph
WSW
Cloudy
Humidity
74%
Feels like
23°F
Dew Point
27°F
8:02 AM
9 AM
34°F
30%
17mph
WSW
30% Chance of Light Rain
Humidity
72%
Feels like
24°F
Dew Point
26°F
10 AM
35°F
30%
16mph
WSW
30% Chance of Light Rain
Humidity
69%
Feels like
25°F
Dew Point
26°F
11 AM
35°F
10%
16mph
WSW
Cloudy
Humidity
66%
Feels like
25°F
Dew Point
25°F
12 PM
36°F
10%
17mph
WSW
Mostly Cloudy
Humidity
64%
Feels like
26°F
Dew Point
25°F
1 PM
36°F
10%
19mph
WSW
Partly Cloudy
Humidity
62%
Feels like
26°F
Dew Point
24°F
2 PM
36°F
10%
20mph
WSW
Partly Cloudy
Humidity
61%
Feels like
26°F
Dew Point
24°F
3 PM
36°F
10%
20mph
WSW
Partly Cloudy
Humidity
60%
Feels like
25°F
Dew Point
24°F
4 PM
36°F
0%
20mph
WSW
Partly Cloudy
Humidity
59%
Feels like
25°F
Dew Point
23°F
4:44 PM
5 PM
35°F
0%
20mph
WSW
Partly Cloudy
Humidity
58%
Feels like
24°F
Dew Point
22°F
6 PM
35°F
0%
21mph
WSW
Windy
Humidity
58%
Feels like
23°F
Dew Point
22°F
7 PM
34°F
0%
22mph
SW
Windy
Humidity
59%
Feels like
22°F
Dew Point
21°F
8 PM
34°F
0%
23mph
SW
Windy
Humidity
59%
Feels like
21°F
Dew Point
21°F
9 PM
34°F
0%
24mph
SW
Windy
Humidity
57%
Feels like
21°F
Dew Point
20°F
10 PM
33°F
0%
25mph
SW
Windy
Humidity
56%
Feels like
21°F
Dew Point
19°F
11 PM
33°F
0%
25mph
SW
Windy
Humidity
55%
Feels like
21°F
Dew Point
19°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Tuesday's Weather Outlook

Tuesday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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