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Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Hazardous Weather Conditions

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

unknown precip

46°F

8°C

Humidity 98%
Wind Speed WSW 7 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 10 Oct 12:45 PM MDT
Extended Forecast for

Greenough MT

Winter Weather Advisory October 10, 06:00pm until October 12, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Rain. High near 49. Calm wind becoming east northeast 5 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Rain

  • Tonight

    Tonight: Rain before 7pm, then rain and snow likely between 7pm and midnight, then snow after midnight. Snow level 5600 feet lowering to 3800 feet after midnight . Low around 21. East northeast wind 3 to 8 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Rain/Snow
    then Snow

  • Sunday

    Sunday: Snow before 3pm, then a chance of rain and snow. High near 40. East northeast wind around 6 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Snow then
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow, mainly before 3am. Patchy fog after 3am. Low around 17. Light northeast wind. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 17 °F

    Snow and
    Patchy Fog

  • Columbus Day

    Columbus Day: A 20 percent chance of snow before noon. Areas of fog before noon. Snow level rising to 5200 feet in the afternoon. Otherwise, partly sunny, with a high near 44. Calm wind.

    High: 44 °F

    Slight Chance
    Snow and
    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Areas of fog after 9pm. Otherwise, partly cloudy, with a low around 16.

    Low: 16 °F

    Areas Fog

  • Tuesday

    Tuesday: Areas of fog before 11am. Otherwise, mostly sunny, with a high near 51.

    High: 51 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

This Afternoon
Rain. High near 49. Calm wind becoming east northeast 5 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain before 7pm, then rain and snow likely between 7pm and midnight, then snow after midnight. Snow level 5600 feet lowering to 3800 feet after midnight . Low around 21. East northeast wind 3 to 8 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Sunday
Snow before 3pm, then a chance of rain and snow. High near 40. East northeast wind around 6 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Sunday Night
Snow, mainly before 3am. Patchy fog after 3am. Low around 17. Light northeast wind. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Columbus Day
A 20 percent chance of snow before noon. Areas of fog before noon. Snow level rising to 5200 feet in the afternoon. Otherwise, partly sunny, with a high near 44. Calm wind.
Monday Night
Areas of fog after 9pm. Otherwise, partly cloudy, with a low around 16.
Tuesday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
Sunny, with a high near 54.
Wednesday Night
Partly cloudy, with a low around 22.
Thursday
Sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 22.
Friday
Sunny, with a high near 61.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Greenough MT
 46.92°N 113.45°W (Elev. 3783 ft)
Last Update:
12:22 pm MDT Oct 10, 2026
Forecast Valid:
1pm MDT Oct 10, 2026-6pm MDT Oct 16, 2026
 
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