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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 2, 09:00 AM MDT until April 3, 12:00 PM MDT

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

35°F

2°C

Humidity	NA
Wind Speed	WNW 0 MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	NA

More Information:

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

Extended Forecast for

15 Miles ENE Big Sky MT

Winter Storm Warning April 2, 09:00am until April 3, 12:00pm

Click here for hazard details and duration

Winter Storm Warning

Overnight
Low: 26 °F
Chance Snow
and Breezy
Thursday
High: 28 °F⇓
Breezy. Snow
Showers
Likely then
Heavy Snow
Thursday Night
Low: 17 °F
Heavy Snow
and Blowing
Snow
Friday
High: 27 °F
Heavy Snow
Friday Night
Low: 18 °F
Partly Cloudy
Saturday
High: 37 °F
Sunny
Saturday Night
Low: 23 °F
Mostly Clear
Sunday
High: 42 °F
Sunny
Sunday Night
Low: 25 °F
Partly Cloudy

Detailed Forecast

Overnight

A 40 percent chance of snow, mainly after 2am. Mostly cloudy, with a low around 26. Breezy, with a south wind around 26 mph, with gusts as high as 33 mph. Total nighttime snow accumulation of less than one inch possible.

Thursday

A chance of snow before 9am, then snow showers, mainly after 9am. The snow could be heavy at times. Some thunder is also possible. Temperature falling to around 21 by 5pm. Breezy, with a south wind 22 to 26 mph becoming west northwest in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

Thursday Night

Snow. The snow could be heavy at times. Widespread blowing snow, mainly before midnight. Low around 17. Wind chill values as low as zero. Blustery, with a west northwest wind around 22 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.

Friday

Snow. The snow could be heavy at times. High near 27. West northwest wind around 17 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

Friday Night

Partly cloudy, with a low around 18. West northwest wind 13 to 15 mph becoming southwest after midnight. Winds could gust as high as 24 mph.

Saturday

Sunny, with a high near 37. Southwest wind around 15 mph, with gusts as high as 24 mph.

Saturday Night

Mostly clear, with a low around 23. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.

Sunday

Sunny, with a high near 42. South southwest wind around 11 mph, with gusts as high as 20 mph.

Sunday Night

Partly cloudy, with a low around 25.

Monday

Partly sunny, with a high near 44.