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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Sioux Pass MT-16 MP 21 (MTSOO)

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

NA

75°F

24°C

Humidity 51%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Last update 30 Jul 12:00 AM MDT
Extended Forecast for

Culbertson MT

Extreme Heat Watch August 1, 12:00pm until August 2, 06:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Overnight

    Overnight: Mostly cloudy, with a low around 62. North northeast wind 6 to 9 mph.

    Low: 62 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 89. East northeast wind around 10 mph, with gusts as high as 18 mph.

    High: 89 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms between 9pm and 11pm. Partly cloudy, with a low around 61. East wind 7 to 10 mph. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A slight chance of showers between 1pm and 2pm. Mostly sunny and hot, with a high near 96. South wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 96 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Southwest wind 6 to 9 mph becoming south southeast in the evening.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. South southeast wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 68. Breezy, with a south southeast wind 14 to 23 mph, with gusts as high as 34 mph.

    Low: 68 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 93. Breezy, with a south wind 15 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph.

    High: 93 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 56. North wind 11 to 16 mph, with gusts as high as 23 mph.

    Low: 56 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 62. North northeast wind 6 to 9 mph.
Thursday
Partly sunny, with a high near 89. East northeast wind around 10 mph, with gusts as high as 18 mph.
Thursday Night
A slight chance of showers and thunderstorms between 9pm and 11pm. Partly cloudy, with a low around 61. East wind 7 to 10 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers between 1pm and 2pm. Mostly sunny and hot, with a high near 96. South wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 61. Southwest wind 6 to 9 mph becoming south southeast in the evening.
Saturday
Sunny and hot, with a high near 100. South southeast wind 5 to 11 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 68. Breezy, with a south southeast wind 14 to 23 mph, with gusts as high as 34 mph.
Sunday
Mostly sunny, with a high near 93. Breezy, with a south wind 15 to 22 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 56. North wind 11 to 16 mph, with gusts as high as 23 mph.
Monday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 77. Breezy, with a north northwest wind 17 to 22 mph, with gusts as high as 32 mph.
Monday Night
Partly cloudy, with a low around 48. Breezy, with a north northwest wind 18 to 23 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Culbertson MT
 48.16°N 104.51°W (Elev. 1998 ft)
Last Update:
9:40 pm MDT Jul 29, 2026
Forecast Valid:
12am MDT Jul 30, 2026-6pm MDT Aug 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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