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

Ravalli County Airport (KHRF)

Lat: 46.25463°NLon: 114.1246°WElev: 3644.0ft.

Overcast

59°F

15°C

Humidity 82%
Wind Speed N 5 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 16 Aug 11:35 PM MDT
Extended Forecast for

Corvallis MT

  • Overnight

    Overnight: A 30 percent chance of showers. Mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 80. Calm wind becoming north northwest around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 53. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 88. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. West wind around 6 mph becoming calm in the evening.

    Low: 55 °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 55.

    Low: 55 °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 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers. Mostly cloudy, with a low around 54. Calm wind.
Sunday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 80. Calm wind becoming north northwest around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 53. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 88. Light and variable wind becoming west southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 55. West wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Corvallis MT
 46.33°N 114.1°W (Elev. 3513 ft)
Last Update:
6:20 pm MDT Aug 16, 2025
Forecast Valid:
12am 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