Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

GREENFIELDS (GFMT)

Lat: 47.65833°NLon: 111.8125°WElev: 3820.0ft.

NA

74°F

23°C

Humidity 64%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 61°F (16°C)
Visibility NA
Last update 17 Aug 08:00 PM MDT
Extended Forecast for

Sun River MT

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight.  Patchy smoke. Partly cloudy, with a low around 51. North northeast wind around 5 mph becoming calm  in the evening.

    Low: 51 °F

    Slight Chance
    T-storms then
    Patchy Smoke

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms between 3pm and 5pm.  Patchy smoke. Mostly sunny, with a high near 84. Calm wind becoming west 5 to 8 mph in the afternoon.  Chance of precipitation is 20%.

    High: 84 °F

    Patchy Smoke
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms between 9pm and 10pm.  Patchy smoke. Partly cloudy, with a low around 51. Northwest wind 5 to 7 mph becoming southwest in the evening.  Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    T-storms then
    Patchy Smoke

  • Wednesday

    Wednesday: Patchy smoke before 7am. Sunny, with a high near 87. Southwest wind around 8 mph.

    High: 87 °F

    Patchy Smoke
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. Southwest wind 3 to 7 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 85. West southwest wind 5 to 8 mph becoming north northeast in the afternoon.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. Northeast wind 5 to 10 mph becoming northwest after midnight.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 86. Calm wind becoming east northeast 5 to 8 mph in the afternoon.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers.  Mostly cloudy, with a low around 56.

    Low: 56 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before midnight. Patchy smoke. Partly cloudy, with a low around 51. North northeast wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms between 3pm and 5pm. Patchy smoke. Mostly sunny, with a high near 84. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms between 9pm and 10pm. Patchy smoke. Partly cloudy, with a low around 51. Northwest wind 5 to 7 mph becoming southwest in the evening. Chance of precipitation is 20%.
Wednesday
Patchy smoke before 7am. Sunny, with a high near 87. Southwest wind around 8 mph.
Wednesday Night
Partly cloudy, with a low around 52. Southwest wind 3 to 7 mph.
Thursday
Sunny, with a high near 85. West southwest wind 5 to 8 mph becoming north northeast in the afternoon.
Thursday Night
Mostly clear, with a low around 53. Northeast wind 5 to 10 mph becoming northwest after midnight.
Friday
Mostly sunny, with a high near 86. Calm wind becoming east northeast 5 to 8 mph in the afternoon.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 56.
Saturday
A chance of showers after noon. Partly sunny, with a high near 88.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 55.
Sunday
Sunny, with a high near 83.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Sun River MT
 47.54°N 111.72°W (Elev. 3540 ft)
12:32 pm MDT Aug 17, 2026
9pm MDT Aug 17, 2026-6pm MDT Aug 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database