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

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Hazardous Weather Conditions

Current conditions at

Ravalli County Airport (KHRF)

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

Clear

46°F

8°C

Humidity 45%
Wind Speed WNW 3 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 09 Dec 03:55 PM MST
Extended Forecast for

14 Miles ENE Darby MT

  • Tonight

    Tonight: Snow, mainly after 9pm. Temperature rising to around 33 by 5am. South wind 6 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 26 °F⇑

    Snow

  • Wednesday

    Wednesday: Snow before 8am, then rain. High near 36. Southwest wind 15 to 17 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Rain/Snow
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: A chance of rain before 2am, then snow likely, possibly mixed with rain. Mostly cloudy, with a low around 34. Southwest wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 34 °F

    Chance Rain
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: Rain, possibly mixed with snow, becoming all snow after 2pm. High near 36. Southwest wind 13 to 18 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Snow. Low around 34. West southwest wind 10 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 34 °F

    Snow

  • Friday

    Friday: Snow likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 35. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Snow Likely
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 28. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow

  • Saturday

    Saturday: A slight chance of snow before 11am. Partly sunny, with a high near 33.

    High: 33 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow, mainly after 9pm. Temperature rising to around 33 by 5am. South wind 6 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.
Wednesday
Snow before 8am, then rain. High near 36. Southwest wind 15 to 17 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain before 2am, then snow likely, possibly mixed with rain. Mostly cloudy, with a low around 34. Southwest wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Rain, possibly mixed with snow, becoming all snow after 2pm. High near 36. Southwest wind 13 to 18 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow. Low around 34. West southwest wind 10 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Snow likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 35. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 28. New snow accumulation of less than a half inch possible.
Saturday
A slight chance of snow before 11am. Partly sunny, with a high near 33.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
A chance of snow, mainly after 11am. Partly sunny, with a high near 35.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 28.
Monday
A chance of snow. Partly sunny, with a high near 35.
Monday Night
A chance of snow. Mostly cloudy, with a low around 30.
Tuesday
Snow likely. Mostly cloudy, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles ENE Darby MT
 46.09°N 113.9°W (Elev. 7303 ft)
Last Update:
2:21 pm MST Dec 9, 2025
Forecast Valid:
4pm MST Dec 9, 2025-6pm MST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

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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