Hourly Weather Forecast - Big Arm, MT

12 AM
38°F
50%
2mph
NNW
50% Chance of Light Rain
Humidity
88%
Feels like
38°F
Dew Point
35°F
1 AM
38°F
50%
2mph
WNW
50% Chance of Light Rain
Humidity
88%
Feels like
38°F
Dew Point
34°F
2 AM
37°F
50%
3mph
W
50% Chance of Light Rain
Humidity
88%
Feels like
37°F
Dew Point
34°F

Snowfall Forecast Through Tonight

Snow To Impact the Rockies This Weekend

A winter storm continues across the Cascades and northern Rockies today through tonight causing periods of moderate to heavy snow.

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Image courtesy of PeakPX.

Top 10 Winter Energy Saving Tips

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

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Traffic Cameras

Weather Cameras

Outdoor Sports Guide