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

55°F

13°C

Humidity 82%
Wind Speed W 4 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 27 Aug 06:35 AM MDT
Extended Forecast for

4 Miles SSW Helena MT

  • Today

    Today: A chance of showers and thunderstorms, mainly between 1pm and 3pm, then a slight chance of thunderstorms after 3pm.  Partly sunny, with a high near 82. South wind 3 to 8 mph. Winds could gust as high as 18 mph.  Chance of precipitation is 40%.

    High: 82 °F

    Partly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Patchy smoke after 11pm. Cloudy during the early evening, then gradual clearing, with a low around 55. South wind 5 to 7 mph.

    Low: 55 °F

    Chance
    T-storms then
    Patchy Smoke

  • Friday

    Friday: Patchy smoke before 10am. Mostly cloudy, with a high near 76. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 76 °F

    Patchy Smoke
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of showers after midnight.  Mostly cloudy, with a low around 56. South southwest wind 3 to 6 mph.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 69. South wind 3 to 8 mph.  Chance of precipitation is 70%.

    High: 69 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 49. West wind around 7 mph.  Chance of precipitation is 80%.

    Low: 49 °F

    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 63. West southwest wind 7 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 50%.

    High: 63 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly between 1pm and 3pm, then a slight chance of thunderstorms after 3pm. Partly sunny, with a high near 82. South wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Patchy smoke after 11pm. Cloudy during the early evening, then gradual clearing, with a low around 55. South wind 5 to 7 mph.
Friday
Patchy smoke before 10am. Mostly cloudy, with a high near 76. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Friday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 56. South southwest wind 3 to 6 mph.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 69. South wind 3 to 8 mph. Chance of precipitation is 70%.
Saturday Night
Showers and possibly a thunderstorm. Low around 49. West wind around 7 mph. Chance of precipitation is 80%.
Sunday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 63. West southwest wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Sunday Night
Mostly clear, with a low around 44. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 49.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 73.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Helena MT
 46.54°N 112.07°W (Elev. 5574 ft)
4:21 am MDT Aug 27, 2026
6am 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