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SCN26-50: Discontinuation of the State Forecast Product (SFP) for all NWS Central Region, Southern Region, and Western Region Offices: Effective June 29, 2026
The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will now be discontinued on July 7, 2026.

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

59°F

15°C

Humidity	50%
Wind Speed	E 5 MPH
Barometer	NA
Dewpoint	40°F (4°C)
Visibility	NA
Last update	09 Jun 10:45 AM MDT

More Information:

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

Extended Forecast for

11 Miles E Big Sky MT

Today
High: 44 °F
Rain/Snow
Tonight
Low: 29 °F
Rain/Snow
then Slight
Chance Snow
Showers
Wednesday
High: 37 °F
Chance Snow
Showers
Wednesday Night
Low: 27 °F
Chance Snow
Showers then
Slight Chance
Snow Showers
Thursday
High: 48 °F
Mostly Sunny
Thursday Night
Low: 31 °F
Mostly Clear
Friday
High: 56 °F
Sunny
Friday Night
Low: 36 °F
Mostly Clear
Saturday
High: 52 °F
Slight Chance
Rain/Snow

Detailed Forecast

Today

Rain and snow showers before 4pm, then snow showers between 4pm and 5pm, then rain and snow showers after 5pm. Some thunder is also possible. High near 44. West southwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tonight

Rain and snow showers before 2am, then a slight chance of snow showers between 2am and 3am. Some thunder is also possible. Low around 29. West wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Wednesday

A 50 percent chance of snow showers between noon and 3pm. Some thunder is also possible. Partly sunny, with a high near 37. West wind 13 to 21 mph, with gusts as high as 32 mph. New snow accumulation of less than a half inch possible.

Wednesday Night

A 50 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 27. West northwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 33 mph. New snow accumulation of less than a half inch possible.

Thursday

Mostly sunny, with a high near 48. West wind 9 to 15 mph, with gusts as high as 24 mph.

Thursday Night

Mostly clear, with a low around 31. West southwest wind 9 to 18 mph, with gusts as high as 30 mph.

Friday

Sunny, with a high near 56. South southwest wind 9 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

Friday Night

Mostly clear, with a low around 36. West northwest wind 6 to 16 mph, with gusts as high as 26 mph.

Saturday

A slight chance of rain and snow showers before 9am, then a slight chance of snow showers between 9am and 3pm, then a slight chance of rain showers after 3pm. Some thunder is also possible. Mostly sunny, with a high near 52.

Saturday Night

Partly cloudy, with a low around 33.

Sunday

Mostly sunny, with a high near 52.

Sunday Night

Mostly clear, with a low around 35.

Monday

A slight chance of rain and snow showers. Some thunder is also possible. Mostly sunny, with a high near 53.