Hourly Weather Forecast - Simms, MT

12 AM
31°F
20%
7mph
SSW
Mostly Cloudy
Humidity
66%
Feels like
25°F
Dew Point
21°F
1 AM
32°F
20%
7mph
SW
Mostly Cloudy
Humidity
66%
Feels like
25°F
Dew Point
22°F
2 AM
32°F
20%
8mph
SW
Mostly Cloudy
Humidity
66%
Feels like
25°F
Dew Point
22°F
3 AM
32°F
30%
8mph
SW
30% Chance of Flurries
Humidity
66%
Feels like
25°F
Dew Point
22°F
4 AM
32°F
30%
8mph
SW
30% Chance of Flurries
Humidity
66%
Feels like
25°F
Dew Point
22°F
5 AM
32°F
30%
8mph
SW
30% Chance of Flurries
Humidity
66%
Feels like
25°F
Dew Point
22°F
6 AM
32°F
30%
9mph
SW
30% Chance of Flurries
Humidity
67%
Feels like
25°F
Dew Point
23°F
7 AM
33°F
30%
9mph
SW
30% Chance Snow Showers
Humidity
68%
Feels like
25°F
Dew Point
23°F
8 AM
33°F
30%
9mph
SW
30% Chance Snow Showers
Humidity
69%
Feels like
25°F
Dew Point
24°F
8:13 AM
9 AM
35°F
30%
10mph
SW
30% Chance Frozen Mix
Humidity
67%
Feels like
27°F
Dew Point
25°F
10 AM
36°F
30%
10mph
SW
30% Chance Rain Showers
Humidity
65%
Feels like
29°F
Dew Point
26°F
11 AM
38°F
30%
10mph
SW
30% Chance of Light Rain
Humidity
63%
Feels like
31°F
Dew Point
26°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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