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Severe Thunderstorms Thursday in the Southern Plains; Coastal Storm to Bring Rain and Wind to New England

Severe thunderstorms are possible across parts of the southern Plains Thursday, with large hail the main threat. A few instances of 2+ inch diameter hail are possible. A storm system moving north along the New England coast will bring heavy rain and gusty winds to the region Thursday and Friday. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Clear

50°F

10°C

Humidity 43%
Wind Speed W 5 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 21 May 10:05 PM MDT
Extended Forecast for

Helena MT

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 64. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 64 °F

    Partly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Cloudy, then gradually becoming partly cloudy, with a low around 40. West southwest wind 3 to 6 mph. Chance of precipitation is 50%.

    Low: 40 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 66. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 66 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 71. Calm wind becoming north 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 71 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. North wind 5 to 9 mph becoming calm after midnight.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 37. Calm wind.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 64. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms. Cloudy, then gradually becoming partly cloudy, with a low around 40. West southwest wind 3 to 6 mph. Chance of precipitation is 50%.
Friday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 66. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 40. Northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 71. Calm wind becoming north 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Mostly clear, with a low around 43. North wind 5 to 9 mph becoming calm after midnight.
Sunday
Sunny, with a high near 76. Calm wind becoming northeast around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 46.
Memorial Day
Sunny, with a high near 80.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 50.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 51.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Helena MT
 46.61°N 112.02°W (Elev. 3940 ft)
Last Update:
9:00 pm MDT May 21, 2025
Forecast Valid:
10pm MDT May 21, 2025-6pm MDT May 28, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation