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

Heavy Rainfall and Flooding Concerns in the Southeast; Unsettled Weather in the West

Heavy to excessive rainfall will persist across much of the Southeast U.S. over the next several days, with isolated flash flooding possible. The heaviest rainfall is forecast over the east coast of Florida. Showers and thunderstorms will continue in the Pacific Northwest and Intermountain West through the weekend. Snow could mix with rain in the highest elevations. Read More >

Hazardous Weather Conditions

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

Lat: 48.74111°NLon: 113.43306°WElev: 4550.0ft.

NA

56°F

13°C

Humidity 42%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 02 Oct 06:10 PM MDT
Extended Forecast for

St Mary MT

Winter Storm Watch October 5, 12:00am until October 5, 12:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Tonight

    Tonight: A slight chance of rain before 1am, then a slight chance of rain after 3am. Mostly cloudy, with a low around 39. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Friday

    Friday: A slight chance of rain between 9am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 61. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 61 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36. West southwest wind 6 to 8 mph.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Rain likely, mainly after noon. Mostly cloudy, with a high near 52. North northwest wind around 6 mph. Chance of precipitation is 60%.

    High: 52 °F

    Chance Rain
    then Rain
    Likely

  • Saturday Night

    Saturday Night: Rain before 3am, then rain and snow. Low around 25. North wind 5 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Rain Likely
    then
    Rain/Snow

  • Sunday

    Sunday: Snow likely before noon. Partly sunny, with a high near 45. North wind around 6 mph becoming east in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Snow Likely
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 24. Calm wind becoming southwest around 5 mph after midnight.

    Low: 24 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. West southwest wind around 6 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of rain before 1am, then a slight chance of rain after 3am. Mostly cloudy, with a low around 39. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
A slight chance of rain between 9am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 61. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 36. West southwest wind 6 to 8 mph.
Saturday
Rain likely, mainly after noon. Mostly cloudy, with a high near 52. North northwest wind around 6 mph. Chance of precipitation is 60%.
Saturday Night
Rain before 3am, then rain and snow. Low around 25. North wind 5 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Sunday
Snow likely before noon. Partly sunny, with a high near 45. North wind around 6 mph becoming east in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly clear, with a low around 24. Calm wind becoming southwest around 5 mph after midnight.
Monday
Sunny, with a high near 55. West southwest wind around 6 mph.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 36.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
A chance of rain. Mostly sunny, with a high near 56.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
Last Update:
2:14 pm MDT Oct 2, 2025
Forecast Valid:
6pm MDT Oct 2, 2025-6pm MDT Oct 9, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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