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

PLAINS (PLAM8)

Lat: 47.46622°NLon: 114.87961°WElev: 2481.0ft.

NA

81°F

27°C

Humidity 24%
Wind Speed ESE 4 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Heat Index79°F (26°C)
Last update 24 Aug 08:26 PM MDT
Extended Forecast for

Plains MT

  • Tonight

    Tonight: Patchy smoke after 5am. Mostly clear, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Clear
    then Patchy
    Smoke

  • Tuesday

    Tuesday: Patchy smoke. Partly sunny, then gradually becoming sunny and hot, with a high near 96. Light north wind.

    High: 96 °F

    Patchy Smoke

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers between 3am and 4am. Patchy smoke. Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Patchy Smoke
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Patchy smoke before 7am. Sunny and hot, with a high near 99. Calm wind. Chance of precipitation is 20%.

    High: 99 °F

    Patchy Smoke
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 54. Light south wind. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy smoke after 5am. Mostly clear, with a low around 49. Calm wind.
Tuesday
Patchy smoke. Partly sunny, then gradually becoming sunny and hot, with a high near 96. Light north wind.
Tuesday Night
A 20 percent chance of showers between 3am and 4am. Patchy smoke. Partly cloudy, with a low around 54. Calm wind.
Wednesday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Patchy smoke before 7am. Sunny and hot, with a high near 99. Calm wind. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 54. Light south wind. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 95.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 46.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
A chance of rain. Partly cloudy, with a low around 42.
Sunday
A slight chance of rain. Mostly sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Plains MT
 47.44°N 114.87°W (Elev. 2598 ft)
Last Update:
2:01 pm MDT Aug 24, 2026
Forecast Valid:
8pm MDT Aug 24, 2026-6pm MDT Aug 31, 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