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The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will be discontinued on May 6, 2026.

Hazardous Weather Conditions

Winter Storm Watch in effect from April 15, 06:00 PM MDT until April 17, 12:00 AM MDT

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

Lat: 45.34534°NLon: 111.17261°WElev: 5699.0ft.

unknown precip

41°F

5°C

Humidity	59%
Wind Speed	SSE 1 MPH
Barometer	NA
Dewpoint	28°F (-2°C)
Visibility	NA
Last update	15 Apr 07:45 AM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

13 Miles ESE Big Sky MT

Winter Storm Watch April 15, 06:00pm until April 17, 12:00am

Click here for hazard details and duration

Winter Storm Watch

Today
High: 34 °F
Windy. Chance
Snow then
Snow Likely
Tonight
Low: 16 °F
Heavy Snow
and Blowing
Snow
Thursday
High: 19 °F
Snow
Thursday Night
Low: 10 °F
Snow Likely
then Slight
Chance Snow
Friday
High: 22 °F
Chance Snow
then Snow
Likely
Friday Night
Low: 11 °F
Chance Snow
then Partly
Cloudy
Saturday
High: 32 °F
Sunny
Saturday Night
Low: 19 °F
Partly Cloudy
Sunday
High: 42 °F
Sunny

Detailed Forecast

Today

Snow likely, mainly after noon. Partly sunny, with a high near 34. Windy, with a south southwest wind 29 to 36 mph, with gusts as high as 50 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

Tonight

Snow showers, mainly before midnight, then snow after midnight. The snow could be heavy at times. Some thunder is also possible. Widespread blowing snow, mainly between midnight and 3am. Low around 16. Windy, with a south southwest wind 31 to 36 mph becoming west northwest 18 to 23 mph after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

Thursday

Snow. High near 19. Wind chill values as low as zero. Northwest wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

Thursday Night

Snow likely, mainly before midnight. Mostly cloudy, with a low around 10. Wind chill values as low as -5. West northwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

Friday

Snow likely, mainly after noon. Mostly cloudy, with a high near 22. West wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Friday Night

A 30 percent chance of snow before midnight. Partly cloudy, with a low around 11. North northwest wind 10 to 18 mph becoming west southwest after midnight. Winds could gust as high as 29 mph. New snow accumulation of less than a half inch possible.

Saturday

Sunny, with a high near 32. Southwest wind 14 to 18 mph, with gusts as high as 28 mph.

Saturday Night

Partly cloudy, with a low around 19. South southwest wind around 15 mph, with gusts as high as 29 mph.

Sunday

Sunny, with a high near 42.

Sunday Night

Partly cloudy, with a low around 27.

Monday

Mostly sunny, with a high near 47.

Monday Night

A slight chance of snow. Partly cloudy, with a low around 30.