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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

25°F

-4°C

Humidity 85%
Wind Speed NA 0 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 12 Oct 08:10 AM MDT
Extended Forecast for

St Mary MT

  • Overnight

    Overnight: Mostly clear, with a low around 25. South southwest wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 25 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 43. South southwest wind around 6 mph.

    High: 43 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 27. South southwest wind 5 to 11 mph, with gusts as high as 26 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. West southwest wind 9 to 14 mph, with gusts as high as 30 mph.

    High: 45 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 29. West southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 55. Calm wind becoming south around 5 mph in the afternoon.

    High: 55 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36. Light south wind becoming southwest 5 to 9 mph in the evening. Winds could gust as high as 20 mph.

    Low: 36 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 60. West southwest wind 10 to 13 mph, with gusts as high as 24 mph.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 25. South southwest wind 7 to 9 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 43. South southwest wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 27. South southwest wind 5 to 11 mph, with gusts as high as 26 mph.
Wednesday
Mostly sunny, with a high near 45. West southwest wind 9 to 14 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 29. West southwest wind 5 to 7 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 55. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 36. Light south wind becoming southwest 5 to 9 mph in the evening. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 60. West southwest wind 10 to 13 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Partly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
Last Update:
12:41 am MDT Oct 13, 2026
Forecast Valid:
1am MDT Oct 13, 2026-6pm MDT Oct 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation