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

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

WEST FORK (WSFM8)

Lat: 45.81556°NLon: 114.25833°WElev: 4420.0ft.

NA

55°F

13°C

Humidity 96%
Wind Speed SW 1 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Last update 17 Aug 04:14 AM MDT
Extended Forecast for

Darby MT

  • Overnight

    Overnight: A 30 percent chance of rain. Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Chance Rain

  • Sunday

    Sunday: A slight chance of rain before 9am, then a slight chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 81. Calm wind becoming north northwest 5 to 9 mph in the afternoon. Chance of precipitation is 60%.

    High: 81 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight. Partly cloudy, with a low around 57. North northwest wind 5 to 8 mph becoming light and variable. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. South southeast wind 6 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. West southwest wind 5 to 10 mph becoming north northeast in the evening. Winds could gust as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of rain. Mostly cloudy, with a low around 57. Calm wind.
Sunday
A slight chance of rain before 9am, then a slight chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 81. Calm wind becoming north northwest 5 to 9 mph in the afternoon. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight. Partly cloudy, with a low around 57. North northwest wind 5 to 8 mph becoming light and variable. Chance of precipitation is 30%.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. South southeast wind 6 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.
Monday Night
Mostly clear, with a low around 59. West southwest wind 5 to 10 mph becoming north northeast in the evening. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Darby MT
 46.02°N 114.16°W (Elev. 3986 ft)
Last Update:
3:30 am MDT Aug 17, 2025
Forecast Valid:
5am MDT Aug 17, 2025-6pm MDT Aug 23, 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