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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

44°F

7°C

Humidity	100%
Wind Speed	NNW 3 MPH
Barometer	NA
Dewpoint	44°F (7°C)
Visibility	NA
Last update	22 Jun 03:15 AM MDT

More Information:

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

Extended Forecast for

5 Miles N Big Sky MT

Overnight
Low: 38 °F
Mostly Clear
Monday
High: 54 °F
Slight Chance
Showers then
Slight Chance
T-storms
Monday Night
Low: 31 °F
Mostly Clear
Tuesday
High: 56 °F
Sunny
Tuesday Night
Low: 38 °F
Partly Cloudy
Wednesday
High: 58 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 39 °F
Chance
Showers then
Partly Cloudy
Thursday
High: 60 °F
Slight Chance
Showers then
Chance
T-storms
Thursday Night
Low: 43 °F
Mostly Cloudy

Detailed Forecast

Overnight

Mostly clear, with a low around 38. Light west wind.

Monday

A slight chance of showers between 11am and noon, then a slight chance of showers and thunderstorms after noon. Sunny, with a high near 54. Light west wind becoming west northwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 20%.

Monday Night

Mostly clear, with a low around 31. North northwest wind 10 to 15 mph becoming light north after midnight. Winds could gust as high as 25 mph.

Tuesday

Sunny, with a high near 56. Light and variable wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

Tuesday Night

Partly cloudy, with a low around 38. North northwest wind 5 to 11 mph becoming south southeast after midnight. Winds could gust as high as 21 mph.

Wednesday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58. Light and variable wind becoming northwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

Wednesday Night

A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 39. North wind 6 to 11 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

Thursday

A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 60. South wind 5 to 13 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

Thursday Night

Mostly cloudy, with a low around 43.

Friday

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. Breezy.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 41.

Saturday

Showers and possibly a thunderstorm. Cloudy, with a high near 46.

Saturday Night

Rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 30.

Sunday

Rain and snow showers likely. Some thunder is also possible. Mostly cloudy, with a high near 39.