National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Sioux Pass MT-16 MP 21 (MTSOO)

Lat: 47.91973°NLon: 104.32619°WElev: 2480.0ft.

unknown precip

57°F

14°C

Humidity 95%
Wind Speed ENE 1 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Last update 19 Sep 07:45 PM MDT
Extended Forecast for

12 Miles SSE Culbertson MT

  • Tonight

    Tonight: A 50 percent chance of showers, mainly after 10pm. Cloudy, with a low around 49. East wind around 14 mph, with gusts as high as 22 mph.

    Low: 49 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers, mainly before 11am. Widespread haze between 8am and 9am. Areas of smoke after noon. Patchy fog between 9am and noon. Otherwise, cloudy, with a high near 63. East wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 63 °F

    Chance
    Showers and
    Patchy Fog
    then Areas
    Smoke

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46. Southeast wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 70. South southeast wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 70 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. South southeast wind around 14 mph, with gusts as high as 23 mph.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. South southeast wind 15 to 18 mph, with gusts as high as 29 mph.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52. South southeast wind 13 to 20 mph, with gusts as high as 26 mph.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. South southeast wind 10 to 13 mph.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South southeast wind 5 to 8 mph.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of showers, mainly after 10pm. Cloudy, with a low around 49. East wind around 14 mph, with gusts as high as 22 mph.
Sunday
A 40 percent chance of showers, mainly before 11am. Widespread haze between 8am and 9am. Areas of smoke after noon. Patchy fog between 9am and noon. Otherwise, cloudy, with a high near 63. East wind 11 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Mostly cloudy, with a low around 46. Southeast wind 7 to 9 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 70. South southeast wind 7 to 14 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 49. South southeast wind around 14 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 74. South southeast wind 15 to 18 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 52. South southeast wind 13 to 20 mph, with gusts as high as 26 mph.
Wednesday
Mostly sunny, with a high near 77. South southeast wind 10 to 13 mph.
Wednesday Night
Partly cloudy, with a low around 53. South southeast wind 5 to 8 mph.
Thursday
Sunny, with a high near 81. South wind 5 to 8 mph.
Thursday Night
Mostly clear, with a low around 56. West southwest wind 6 to 10 mph becoming east southeast in the evening.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SSE Culbertson MT
 48°N 104.4°W (Elev. 2300 ft)
Last Update:
3:06 pm MDT Sep 19, 2026
Forecast Valid:
8pm MDT Sep 19, 2026-6pm MDT Sep 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation