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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 Warning 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

48°F

9°C

Humidity	46%
Wind Speed	S 17 MPH
Barometer	NA
Dewpoint	28°F (-2°C)
Visibility	NA
Wind Chill	42°F (6°C)
Last update	15 Apr 03:00 PM MDT

More Information:

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

Extended Forecast for

14 Miles ESE Big Sky MT

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

Click here for hazard details and duration

Winter Storm Warning

This Afternoon
High: 32 °F
Snow Showers
Likely and
Windy
Tonight
Low: 15 °F
Heavy Snow
and Blowing
Snow
Thursday
High: 18 °F
Snow
Thursday Night
Low: 8 °F
Snow Showers
Likely then
Slight Chance
Snow
Friday
High: 21 °F
Chance Snow
then Snow
Friday Night
Low: 10 °F
Chance Snow
then Partly
Cloudy
Saturday
High: 31 °F
Sunny
Saturday Night
Low: 18 °F
Partly Cloudy
Sunday
High: 41 °F
Sunny

Detailed Forecast

This Afternoon

Snow showers likely. Mostly cloudy, with a high near 32. Windy, with a south southwest wind around 31 mph, with gusts as high as 49 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 before midnight. Low around 15. Windy, with a south southwest wind 26 to 31 mph decreasing to 17 to 22 mph after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Thursday

Snow before noon, then snow showers after noon. High near 18. Wind chill values as low as zero. West wind around 16 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Thursday Night

Snow showers likely before midnight, then a slight chance of snow after midnight. Mostly cloudy, with a low around 8. Wind chill values as low as -10. Northwest wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

Friday

Snow, mainly after noon. High near 21. Northwest wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Friday Night

A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 10. West southwest wind 10 to 16 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.

Saturday

Sunny, with a high near 31. Southwest wind 13 to 17 mph, with gusts as high as 28 mph.

Saturday Night

Partly cloudy, with a low around 18. South southwest wind around 17 mph, with gusts as high as 26 mph.

Sunday

Sunny, with a high near 41.

Sunday Night

Partly cloudy, with a low around 27.

Monday

Mostly sunny, with a high near 48.

Monday Night

Partly cloudy, with a low around 31.