Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

RONAN (RONM8)

Lat: 47.53639°NLon: 114.09889°WElev: 3068.0ft.

NA

32°F

0°C

Humidity 59%
Wind Speed W 5 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill27°F (-3°C)
Last update 27 Dec 11:31 AM MST
Extended Forecast for

9 Miles E St. Ignatius MT

Winter Weather Advisory December 27, 12:35pm until December 27, 08:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 27, 12:35pm until December 27, 08:00pm

    NOW until 8:00pm Sat

    Winter Weather Advisory

  • This Afternoon

    High: 10 °F

    Snow Likely
    and Blowing
    Snow

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around -3. Wind chill values as low as -21. West northwest wind 9 to 17 mph, with gusts as high as 24 mph.

    Low: -3 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 8. Wind chill values as low as -16. West wind 7 to 10 mph.

    High: 8 °F

    Cold

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 5. Wind chill values as low as -8. West wind around 8 mph.

    Low: 5 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 15. Southwest wind around 8 mph.

    High: 15 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 19.

    High: 19 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Snow likely, mainly between 1pm and 2pm. Widespread blowing snow, mainly before 2pm. Mostly cloudy and cold, with a high near 10. Wind chill values as low as -20. Windy, with a west northwest wind 27 to 32 mph decreasing to 21 to 26 mph. Winds could gust as high as 45 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 2 to 4 inches possible.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around -3. Wind chill values as low as -21. West northwest wind 9 to 17 mph, with gusts as high as 24 mph.
Sunday
Mostly sunny and cold, with a high near 8. Wind chill values as low as -16. West wind 7 to 10 mph.
Sunday Night
Partly cloudy, with a low around 5. Wind chill values as low as -8. West wind around 8 mph.
Monday
Partly sunny, with a high near 15. Southwest wind around 8 mph.
Monday Night
Mostly cloudy, with a low around 10.
Tuesday
Partly sunny, with a high near 19.
Tuesday Night
Mostly cloudy, with a low around 15.
Wednesday
Partly sunny, with a high near 23.
Wednesday Night
Mostly cloudy, with a low around 17.
New Year's Day
A slight chance of snow. Mostly cloudy, with a high near 23.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 17.
Friday
Snow likely. Mostly cloudy, with a high near 22.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles E St. Ignatius MT
 47.31°N 113.9°W (Elev. 8199 ft)
1:02 am MST Dec 27, 2025
12pm MST Dec 27, 2025-6pm MST Jan 2, 2026
 
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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