Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Helena Regional Airport (KHLN)

Lat: 46.60445°NLon: 111.9892°WElev: 3874.0ft.

Clear

79°F

26°C

Humidity 36%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 27 Aug 01:53 PM MDT
Extended Forecast for

East Helena MT

  • This Afternoon

    This Afternoon: A chance of showers before 3pm, then a slight chance of thunderstorms after 3pm.  Partly sunny, with a high near 88. East wind around 9 mph becoming south. Winds could gust as high as 18 mph.  Chance of precipitation is 50%.

    High: 88 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of thunderstorms before 9pm.  Patchy smoke after 11pm. Mostly cloudy, with a low around 55. Southwest wind 3 to 8 mph.  Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    T-storms then
    Patchy Smoke

  • Friday

    Friday: A slight chance of showers between 1pm and 3pm.  Patchy smoke before noon. Increasing clouds, with a high near 82. Light and variable wind becoming south southwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.  Chance of precipitation is 20%.

    High: 82 °F

    Patchy Smoke
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly after 4am.  Mostly cloudy, with a low around 55. South southeast wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after noon.  High near 76. Calm wind becoming south around 6 mph in the afternoon.  Chance of precipitation is 80%.

    High: 76 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 48. West southwest wind 3 to 6 mph.  Chance of precipitation is 90%.

    Low: 48 °F

    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 70. West southwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 70 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. West wind 11 to 16 mph becoming south southwest 5 to 10 mph after midnight. Winds could gust as high as 28 mph.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers before 3pm, then a slight chance of thunderstorms after 3pm. Partly sunny, with a high near 88. East wind around 9 mph becoming south. Winds could gust as high as 18 mph. Chance of precipitation is 50%.
Tonight
A slight chance of thunderstorms before 9pm. Patchy smoke after 11pm. Mostly cloudy, with a low around 55. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers between 1pm and 3pm. Patchy smoke before noon. Increasing clouds, with a high near 82. Light and variable wind becoming south southwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Friday Night
A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 55. South southeast wind 3 to 8 mph. Winds could gust as high as 20 mph.
Saturday
Showers likely, then showers and possibly a thunderstorm after noon. High near 76. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm. Low around 48. West southwest wind 3 to 6 mph. Chance of precipitation is 90%.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 70. West southwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Mostly clear, with a low around 42. West wind 11 to 16 mph becoming south southwest 5 to 10 mph after midnight. Winds could gust as high as 28 mph.
Monday
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Sunny, with a high near 81.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 48.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
East Helena MT
 46.59°N 111.92°W (Elev. 3891 ft)
12:31 pm MDT Aug 27, 2026
2pm MDT Aug 27, 2026-6pm MDT Sep 2, 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