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

59°F

15°C

Humidity 89%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Last update 19 Sep 03:30 AM MDT
Extended Forecast for

4 Miles W Culbertson MT

  • Overnight

    Overnight: Cloudy, with a low around 55. North northeast wind around 11 mph.

    Low: 55 °F

    Cloudy

  • Saturday

    Saturday: Patchy fog between 7am and 8am. Otherwise, cloudy, with a high near 69. East northeast wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 69 °F

    Patchy Fog
    then Cloudy

  • Saturday Night

    Saturday Night: A slight chance of showers before midnight, then a chance of showers after 1am. Cloudy, with a low around 50. East wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    Low: 50 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers, mainly before 11am. Patchy fog between 9am and noon. Otherwise, mostly cloudy, with a high near 63. East southeast wind 11 to 13 mph, with gusts as high as 22 mph.

    High: 63 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 46. East southeast wind 6 to 9 mph.

    Low: 46 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72. South southeast wind 6 to 15 mph, with gusts as high as 25 mph.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. South southeast wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. South southeast wind 13 to 15 mph, with gusts as high as 24 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53. Southeast wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Overnight
Cloudy, with a low around 55. North northeast wind around 11 mph.
Saturday
Patchy fog between 7am and 8am. Otherwise, cloudy, with a high near 69. East northeast wind 11 to 15 mph, with gusts as high as 24 mph.
Saturday Night
A slight chance of showers before midnight, then a chance of showers after 1am. Cloudy, with a low around 50. East wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Sunday
A 40 percent chance of showers, mainly before 11am. Patchy fog between 9am and noon. Otherwise, mostly cloudy, with a high near 63. East southeast wind 11 to 13 mph, with gusts as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 46. East southeast wind 6 to 9 mph.
Monday
Mostly sunny, with a high near 72. South southeast wind 6 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 50. South southeast wind 13 to 15 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 78. South southeast wind 13 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 53. Southeast wind 9 to 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 81. Southeast wind around 8 mph.
Wednesday Night
Partly cloudy, with a low around 54. Southeast wind 5 to 8 mph.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 55.
Friday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Culbertson MT
 48.16°N 104.61°W (Elev. 1919 ft)
Last Update:
12:45 am MDT Sep 19, 2026
Forecast Valid:
3am MDT Sep 19, 2026-6pm MDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation