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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

ST. MARY (SRYM8)

Lat: 48.74108°NLon: 113.43289°WElev: 4557.0ft.

NA

59°F

15°C

Humidity 62%
Wind Speed SSW 5 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 17 Aug 03:11 AM MDT
Extended Forecast for

12 Miles E St Mary MT

  • Today

    Today: Mostly sunny, with a high near 73. West southwest wind 7 to 11 mph.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 49. West southwest wind 7 to 9 mph.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of showers after noon. Partly sunny, with a high near 79. West southwest wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 79 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. West southwest wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. West southwest wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56. West southwest wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 81. West southwest wind 8 to 16 mph, with gusts as high as 28 mph.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. West wind 7 to 17 mph, with gusts as high as 28 mph.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 73. West southwest wind 7 to 11 mph.
Tonight
Mostly clear, with a low around 49. West southwest wind 7 to 9 mph.
Monday
A 40 percent chance of showers after noon. Partly sunny, with a high near 79. West southwest wind 6 to 14 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 54. West southwest wind 7 to 14 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 84. West southwest wind 7 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 56. West southwest wind 7 to 14 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 81. West southwest wind 8 to 16 mph, with gusts as high as 28 mph.
Wednesday Night
Mostly clear, with a low around 49. West wind 7 to 17 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 73.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles E St Mary MT
 48.74°N 113.15°W (Elev. 4810 ft)
Last Update:
3:16 am MDT Aug 17, 2025
Forecast Valid:
4am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
Forecast Discussion
 
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