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

HELENA (HRWM8)

Lat: 46.73167°NLon: 112.01917°WElev: 3800.0ft.

NA

59°F

15°C

Humidity 79%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 27 May 01:53 AM MDT
Extended Forecast for

6 Miles SW Marysville MT

  • Overnight

    Overnight: Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 73. Calm wind becoming east 5 to 9 mph in the afternoon.

    High: 73 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, then gradually becoming clear, with a low around 50. Northeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 50 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. Calm wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 77 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before midnight. Partly cloudy, with a low around 51. East wind 5 to 8 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 51 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. Light and variable wind becoming north 5 to 9 mph in the afternoon.

    High: 74 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Northeast wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers, with thunderstorms also possible after noon. Cloudy, with a high near 52. West northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 52 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 46. Calm wind.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 73. Calm wind becoming east 5 to 9 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, then gradually becoming clear, with a low around 50. Northeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 40%.
Thursday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. Calm wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
A 30 percent chance of showers before midnight. Partly cloudy, with a low around 51. East wind 5 to 8 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Friday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. Light and variable wind becoming north 5 to 9 mph in the afternoon.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Northeast wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Saturday
Showers, with thunderstorms also possible after noon. Cloudy, with a high near 52. West northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 39.
Sunday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 52.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 38.
Monday
A chance of rain and thunderstorms. Partly sunny, with a high near 56.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 40.
Tuesday
A slight chance of rain and thunderstorms. Mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Marysville MT
 46.7°N 112.38°W (Elev. 6184 ft)
Last Update:
12:31 am MDT May 27, 2026
Forecast Valid:
2am MDT May 27, 2026-6pm MDT Jun 2, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation