Heavy Rainfall and Flooding Concerns in the Southwest; Coastal Low to Impact the East Coast

Deep tropical moisture will lead to widespread showers and thunderstorms capable of producing flash flooding through early next week over the Southwest and Four Corners. A coastal storm is expected to impact the southeast U.S. coast and mid-Atlantic regions with flooding, dangerous rip currents, gusty winds and heavy rain up much of the East Coast through early next week. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

Lat: 46.71854°NLon: 113.29534°WElev: 3901.0ft.

unknown precip

42°F

6°C

Humidity 84%
Wind Speed W 2 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 12 Oct 05:00 AM MDT
Extended Forecast for

8 Miles SE Greenough MT

Winter Weather Advisory until October 13, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until October 13, 12:00pm

    NOW until 12:00pm Mon

    Winter Weather Advisory

  • Overnight

    Low: 33 °F

    Snow Likely

  • Sunday

    Sunday: Rain and snow before 1pm, then rain between 1pm and 4pm, then snow after 4pm.  High near 42. West wind 5 to 8 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Snow then
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow, mainly before 3am.  Low around 21. East wind 8 to 17 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 21 °F

    Snow

  • Columbus Day

    Columbus Day: Snow likely, mainly before noon.  Mostly cloudy, with a high near 33. East wind 8 to 18 mph, with gusts as high as 28 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Snow Likely
    then Slight
    Chance Snow

  • Monday Night

    Monday Night: A 30 percent chance of snow, mainly after midnight.  Mostly cloudy, with a low around 24. East wind 6 to 9 mph.  Little or no snow accumulation expected.

    Low: 24 °F

    Chance Snow

  • Tuesday

    Tuesday: A chance of snow before 3pm, then a slight chance of rain.  Mostly cloudy, with a high near 43. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 43 °F

    Chance Snow
    then Slight
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow before midnight, then a chance of rain between midnight and 3am, then a chance of rain and snow after 3am.  Patchy fog between 9pm and 10pm. Snow level 7400 feet lowering to 6400 feet after midnight .  Otherwise, mostly cloudy, with a low around 32. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 32 °F

    Chance
    Rain/Snow and
    Patchy Fog

  • Wednesday

    Wednesday: Rain and snow likely, becoming all rain after noon.  Patchy fog before 11am, then patchy fog after 4pm. Snow level 6300 feet rising to 7000 feet in the afternoon.  Otherwise, mostly cloudy, with a high near 40.

    High: 40 °F

    Rain/Snow
    Likely and
    Patchy Fog

Detailed Forecast

Overnight
Snow likely. Cloudy, with a low around 33. West southwest wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Rain and snow before 1pm, then rain between 1pm and 4pm, then snow after 4pm. High near 42. West wind 5 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Sunday Night
Snow, mainly before 3am. Low around 21. East wind 8 to 17 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Columbus Day
Snow likely, mainly before noon. Mostly cloudy, with a high near 33. East wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 24. East wind 6 to 9 mph. Little or no snow accumulation expected.
Tuesday
A chance of snow before 3pm, then a slight chance of rain. Mostly cloudy, with a high near 43. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday Night
A slight chance of rain and snow before midnight, then a chance of rain between midnight and 3am, then a chance of rain and snow after 3am. Patchy fog between 9pm and 10pm. Snow level 7400 feet lowering to 6400 feet after midnight . Otherwise, mostly cloudy, with a low around 32. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday
Rain and snow likely, becoming all rain after noon. Patchy fog before 11am, then patchy fog after 4pm. Snow level 6300 feet rising to 7000 feet in the afternoon. Otherwise, mostly cloudy, with a high near 40.
Wednesday Night
A chance of rain before midnight, then rain and snow likely. Patchy fog before 11pm. Snow level 7000 feet lowering to 6200 feet after midnight . Otherwise, mostly cloudy, with a low around 33.
Thursday
A chance of rain and snow before 9am, then a chance of snow between 9am and noon, then a slight chance of rain after noon. Patchy fog between 9am and 10am. Snow level rising to 6300 feet in the afternoon. Otherwise, partly sunny, with a high near 43.
Thursday Night
A chance of rain and snow. Snow level 6400 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 33.
Friday
A chance of rain and snow. Partly sunny, with a high near 45.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 31.
Saturday
A chance of snow. Mostly sunny, with a high near 44.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SE Greenough MT
 46.83°N 113.33°W (Elev. 5689 ft)
3:30 am MDT Oct 12, 2025
5am MDT Oct 12, 2025-6pm MDT Oct 18, 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