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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

NA

67°F

19°C

Humidity 53%
Wind Speed ESE 5 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 20 Jun 03:45 PM MDT
Extended Forecast for

12 Miles SE Helmville MT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. West northwest wind around 9 mph, with gusts as high as 20 mph.

    High: 73 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 47. West wind 5 to 10 mph, with gusts as high as 24 mph.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 68. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44. Northwest wind 5 to 9 mph becoming northeast after midnight. Winds could gust as high as 22 mph.

    Low: 44 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. East northeast wind around 6 mph becoming northwest in the afternoon.

    High: 64 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. West northwest wind around 9 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 47. West wind 5 to 10 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 68. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 44. Northwest wind 5 to 9 mph becoming northeast after midnight. Winds could gust as high as 22 mph.
Monday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. East northeast wind around 6 mph becoming northwest in the afternoon.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 75.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 49.
Saturday
A chance of rain and thunderstorms. Partly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SE Helmville MT
 46.73°N 112.79°W (Elev. 5486 ft)
Last Update:
2:01 pm MDT Jun 20, 2026
Forecast Valid:
4pm MDT Jun 20, 2026-6pm MDT Jun 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation