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

TOSTON (TOSM)

Lat: 46.12222°NLon: 111.49472°WElev: 4058.0ft.

NA

76°F

24°C

Humidity 40%
Wind Speed S 4 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Heat Index78°F (26°C)
Last update 17 Aug 06:00 PM MDT
Extended Forecast for

7 Miles SSE Toston MT

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly cloudy, with a low around 51. North wind around 6 mph becoming calm  in the evening.

    Low: 51 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm.  Mostly sunny, with a high near 81. Calm wind becoming north northwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly cloudy, with a low around 48. South wind around 6 mph becoming calm  in the evening.

    Low: 48 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 84. Calm wind becoming west northwest 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. North northwest wind 5 to 9 mph becoming calm  after midnight. Winds could gust as high as 20 mph.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53. North wind 3 to 7 mph.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 55.

    Low: 55 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 51. North wind around 6 mph becoming calm in the evening.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 81. Calm wind becoming north northwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 48. South wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 84. Calm wind becoming west northwest 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 50. North northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 53. North wind 3 to 7 mph.
Friday
Mostly sunny, with a high near 89. Calm wind.
Friday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 55.
Saturday
A slight chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 86.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 50.
Monday
Sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSE Toston MT
 46.1°N 111.4°W (Elev. 3999 ft)
12:32 pm MDT Aug 17, 2026
6pm MDT Aug 17, 2026-6pm MDT Aug 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database