Hourly Weather Forecast - Mammoth, MT

12 AM
29°F
40%
13mph
SW
40% Chance Snow Showers
Humidity
66%
Feels like
18°F
Dew Point
19°F
1 AM
29°F
40%
13mph
SW
40% Chance Snow Showers
Humidity
65%
Feels like
19°F
Dew Point
19°F
2 AM
30°F
40%
13mph
SW
40% Chance Snow Showers
Humidity
65%
Feels like
19°F
Dew Point
19°F
3 AM
30°F
30%
14mph
SW
30% Chance Frozen Mix
Humidity
65%
Feels like
20°F
Dew Point
20°F
4 AM
31°F
30%
14mph
SW
30% Chance Frozen Mix
Humidity
65%
Feels like
20°F
Dew Point
20°F
5 AM
31°F
20%
14mph
SW
Partly Cloudy
Humidity
66%
Feels like
21°F
Dew Point
21°F
6 AM
31°F
20%
14mph
SW
Partly Cloudy
Humidity
68%
Feels like
21°F
Dew Point
22°F
7 AM
31°F
20%
14mph
SW
Partly Cloudy
Humidity
70%
Feels like
21°F
Dew Point
22°F
8 AM
31°F
20%
14mph
SW
Mostly Cloudy
Humidity
72%
Feels like
21°F
Dew Point
23°F

Rainfall and Snowfall Totals Through Wednesday

Heavy Rain, Snow, and Winds Wallop Northwest

The atmospheric river this week continues to hit the Pacific Northwest with heavy rain, snow, and high winds.

Tuesday'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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