Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Helmville MT-200 MP 53.3 (MTHLM)

Lat: 46.96826°NLon: 112.97487°WElev: 4199.0ft.

NA

56°F

13°C

Humidity 72%
Wind Speed NE 3 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 17 Aug 01:00 AM MDT
Extended Forecast for

5 Miles N Helmville MT

  • Overnight

    Overnight: Partly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 80. Calm wind becoming west northwest 5 to 7 mph in the afternoon.  Chance of precipitation is 30%.

    High: 80 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Widespread haze before 1am, then widespread haze after 2am. Areas of smoke between 1am and 2am. Partly cloudy, with a low around 48. West wind 5 to 7 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    T-storms then
    Haze

  • Monday

    Monday: Sunny, with a high near 85. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. West wind 5 to 8 mph becoming calm  in the evening.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 49. Calm wind.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. Calm wind becoming west northwest 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Widespread haze before 1am, then widespread haze after 2am. Areas of smoke between 1am and 2am. Partly cloudy, with a low around 48. West wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
Sunny, with a high near 85. Calm wind becoming west 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 51. West wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 84.
Thursday Night
Clear, with a low around 45.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N Helmville MT
 46.93°N 112.95°W (Elev. 4343 ft)
6:20 pm MDT Aug 16, 2025
1am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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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