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Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

2°F

-17°C

Humidity 64%
Wind Speed NA 3 MPH
Barometer NA
Dewpoint -8°F (-22°C)
Visibility NA
Last update 22 Jan 11:10 PM MST
Extended Forecast for

St Mary MT

  • Tonight

    Tonight: A 20 percent chance of snow before 3am. Mostly cloudy, with a low around -2. Wind chill values as low as -15. East northeast wind around 6 mph.

    Low: -2 °F

    Slight Chance
    Snow

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 15. Wind chill values as low as -10. Calm wind becoming north around 5 mph.

    High: 15 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 6. Wind chill values as low as zero. West southwest wind 3 to 6 mph.

    Low: 6 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow. Partly sunny, with a high near 20. West northwest wind around 6 mph. New snow accumulation of less than a half inch possible.

    High: 20 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 7. Northwest wind around 6 mph becoming west southwest in the evening.

    Low: 7 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 27. West southwest wind 8 to 14 mph, with gusts as high as 28 mph.

    High: 27 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16. West southwest wind 11 to 14 mph, with gusts as high as 29 mph.

    Low: 16 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 30. West southwest wind around 11 mph, with gusts as high as 24 mph.

    High: 30 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of snow before 3am. Mostly cloudy, with a low around -2. Wind chill values as low as -15. East northeast wind around 6 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 15. Wind chill values as low as -10. Calm wind becoming north around 5 mph.
Friday Night
Mostly cloudy, with a low around 6. Wind chill values as low as zero. West southwest wind 3 to 6 mph.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 20. West northwest wind around 6 mph. New snow accumulation of less than a half inch possible.
Saturday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 7. Northwest wind around 6 mph becoming west southwest in the evening.
Sunday
Sunny, with a high near 27. West southwest wind 8 to 14 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 16. West southwest wind 11 to 14 mph, with gusts as high as 29 mph.
Monday
Mostly sunny, with a high near 30. West southwest wind around 11 mph, with gusts as high as 24 mph.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 32.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
Partly sunny, with a high near 31.
Wednesday Night
A slight chance of snow. Mostly cloudy, with a low around 17.
Thursday
Partly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
Last Update:
9:47 pm MST Jan 22, 2026
Forecast Valid:
11pm MST Jan 22, 2026-6pm MST Jan 29, 2026
 
Forecast Discussion
 
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Additional Resources

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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