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Heavy to Excessive Rainfall in Montana; Bering Sea Low to Bring Impacts to Southwest Alaska

Heavy to excessive rainfall is forecast across portions of Montana Wednesday, along with an isolated flash flooding threat. A Slight Risk of Excessive Rainfall (level 2 of 4) is in effect for central Montana. A Bering Sea low will continue to bring strong winds, moderate to heavy rainfall, and high seas to southwest Alaska. A North Pacific Low may impact southwest Alaska at the end of the week. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Rain

57°F

14°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.71 in (1006.1 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Last update 17 Sep 10:35 PM MDT
Extended Forecast for

Helena MT

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then showers and possibly a thunderstorm between 2am and 3am, then rain after 3am. Low around 49. West wind 6 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Showers
    Likely then
    Showers

  • Wednesday

    Wednesday: Rain, mainly before 4pm. High near 62. West wind 18 to 21 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 62 °F

    Rain then
    Rain Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 49. West wind 13 to 17 mph, with gusts as high as 41 mph.

    Low: 49 °F

    Chance Rain
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 73. Southwest wind around 7 mph.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48. West wind around 7 mph becoming south southwest after midnight.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 72. South southwest wind 6 to 9 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of rain. Partly cloudy, with a low around 42. West northwest wind 5 to 9 mph, with gusts as high as 18 mph.

    Low: 42 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A slight chance of rain after noon. Mostly sunny, with a high near 65. Light and variable wind becoming north northeast 5 to 7 mph in the afternoon.

    High: 65 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely before 2am, then showers and possibly a thunderstorm between 2am and 3am, then rain after 3am. Low around 49. West wind 6 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Rain, mainly before 4pm. High near 62. West wind 18 to 21 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
A 40 percent chance of rain before midnight. Mostly cloudy, with a low around 49. West wind 13 to 17 mph, with gusts as high as 41 mph.
Thursday
Mostly sunny, with a high near 73. Southwest wind around 7 mph.
Thursday Night
Mostly clear, with a low around 48. West wind around 7 mph becoming south southwest after midnight.
Friday
Mostly sunny, with a high near 72. South southwest wind 6 to 9 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.
Friday Night
A 20 percent chance of rain. Partly cloudy, with a low around 42. West northwest wind 5 to 9 mph, with gusts as high as 18 mph.
Saturday
A slight chance of rain after noon. Mostly sunny, with a high near 65. Light and variable wind becoming north northeast 5 to 7 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Partly sunny, with a high near 65.
Sunday Night
A chance of rain. Partly cloudy, with a low around 43.
Monday
A chance of rain. Mostly cloudy, with a high near 63.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 45.
Tuesday
Partly sunny, with a high near 68.
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Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Helena MT
 46.58°N 112.01°W (Elev. 4111 ft)
Last Update:
9:53 pm MDT Sep 17, 2024
Forecast Valid:
10pm MDT Sep 17, 2024-6pm MDT Sep 24, 2024
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation