Hourly Weather Forecast - Mammoth, MT

12 AM
32°F
50%
11mph
SW
50% Chance of Flurries
Humidity
73%
Feels like
23°F
Dew Point
25°F
1 AM
32°F
40%
11mph
SW
40% Chance of Flurries
Humidity
74%
Feels like
23°F
Dew Point
25°F
2 AM
32°F
30%
10mph
SW
30% Chance Frozen Mix
Humidity
75%
Feels like
23°F
Dew Point
24°F
3 AM
31°F
20%
10mph
SW
Mostly Cloudy
Humidity
75%
Feels like
23°F
Dew Point
24°F
4 AM
30°F
20%
9mph
SW
Partly Cloudy
Humidity
75%
Feels like
22°F
Dew Point
23°F
5 AM
30°F
10%
9mph
SW
Partly Cloudy
Humidity
75%
Feels like
22°F
Dew Point
23°F
6 AM
29°F
30%
9mph
SW
30% Chance Frozen Mix
Humidity
76%
Feels like
21°F
Dew Point
22°F
7 AM
29°F
30%
9mph
SW
30% Chance of Flurries
Humidity
76%
Feels like
20°F
Dew Point
22°F
8 AM
29°F
30%
10mph
SSW
30% Chance of Flurries
Humidity
76%
Feels like
20°F
Dew Point
22°F
8:07 AM
9 AM
30°F
30%
10mph
SSW
30% Chance of Flurries
Humidity
74%
Feels like
21°F
Dew Point
22°F
10 AM
31°F
30%
10mph
SSW
30% Chance of Flurries
Humidity
72%
Feels like
22°F
Dew Point
23°F
11 AM
32°F
30%
10mph
SSW
30% Chance Snow Showers
Humidity
70%
Feels like
24°F
Dew Point
23°F
12 PM
33°F
30%
11mph
SSW
30% Chance Snow Showers
Humidity
67%
Feels like
25°F
Dew Point
24°F
1 PM
34°F
20%
11mph
SSW
Partly Cloudy
Humidity
65%
Feels like
26°F
Dew Point
23°F
2 PM
34°F
20%
11mph
SSW
Mostly Sunny
Humidity
64%
Feels like
26°F
Dew Point
23°F
3 PM
33°F
20%
11mph
SSW
Mostly Sunny
Humidity
65%
Feels like
25°F
Dew Point
23°F
4 PM
32°F
20%
11mph
SSW
Partly Cloudy
Humidity
67%
Feels like
23°F
Dew Point
22°F
4:48 PM
5 PM
31°F
20%
11mph
SSW
Partly Cloudy
Humidity
68%
Feels like
21°F
Dew Point
22°F
6 PM
30°F
10%
12mph
SSW
Partly Cloudy
Humidity
69%
Feels like
21°F
Dew Point
21°F
7 PM
30°F
10%
13mph
SSW
Mostly Cloudy
Humidity
69%
Feels like
21°F
Dew Point
21°F
8 PM
30°F
10%
13mph
SSW
Mostly Cloudy
Humidity
68%
Feels like
20°F
Dew Point
21°F
9 PM
31°F
20%
13mph
SSW
Cloudy
Humidity
68%
Feels like
20°F
Dew Point
21°F
10 PM
31°F
20%
13mph
SSW
Cloudy
Humidity
67%
Feels like
20°F
Dew Point
21°F
11 PM
31°F
30%
13mph
SSW
30% Chance of Flurries
Humidity
67%
Feels like
21°F
Dew Point
21°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

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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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