Hourly Weather Forecast - Mammoth, MT

4 PM
40°F
10%
19mph
WSW
Partly Cloudy
Humidity
41%
Feels like
30°F
Dew Point
18°F
4:44 PM
5 PM
38°F
70%
20mph
WSW
70% Chance Rain Showers
Humidity
46%
Feels like
28°F
Dew Point
19°F
6 PM
38°F
10%
21mph
WSW
Windy
Humidity
50%
Feels like
27°F
Dew Point
21°F
7 PM
38°F
10%
23mph
WSW
Windy
Humidity
55%
Feels like
27°F
Dew Point
23°F
8 PM
38°F
10%
24mph
WSW
Windy
Humidity
59%
Feels like
26°F
Dew Point
25°F
9 PM
37°F
0%
26mph
SW
Windy
Humidity
61%
Feels like
26°F
Dew Point
25°F
10 PM
37°F
30%
27mph
SW
30% Chance Rain Showers
Humidity
61%
Feels like
25°F
Dew Point
25°F
11 PM
37°F
10%
28mph
SW
Windy
Humidity
62%
Feels like
25°F
Dew Point
25°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.

Monday's Weather Outlook

Today'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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