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

Heat Continues Across the Central and Western U.S.; Tracking Hazardous Weather Across the Northern U.S.

Early-season record warmth will persist across portions of the western and central U.S. through mid week, with high temperatures approaching 90 degrees from Texas to the Ohio Valley. Rain and mountain snow are possible across the Pacific Northwest Wednesday, with Severe Thunderstorms and wintry weather expected across the Northeast Thursday and Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Fair

37°F

3°C

Humidity 92%
Wind Speed Calm
Barometer 30.31 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 24 Mar 8:55 am MDT
Extended Forecast for

Saint Marys Glacier CO

  • Today

    Today: Mostly sunny, with a high near 54. Breezy, with a west wind 20 to 23 mph, with gusts as high as 34 mph.

    High: 54 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 40. Breezy, with a west wind 15 to 22 mph, with gusts as high as 34 mph.

    Low: 40 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 59. Breezy, with a west wind 18 to 21 mph, with gusts as high as 38 mph.

    High: 59 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. Breezy, with a west wind 17 to 20 mph, with gusts as high as 39 mph.

    Low: 41 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: A 30 percent chance of rain after noon. Mostly sunny, with a high near 54. Breezy, with a west wind 18 to 24 mph, with gusts as high as 40 mph.

    High: 54 °F

    Breezy.
    Mostly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 26. Blustery. Chance of precipitation is 40%.

    Low: 26 °F

    Chance
    Rain/Snow and
    Blustery then
    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow. Partly sunny, with a high near 40. Breezy.

    High: 40 °F

    Chance Snow
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28. Breezy.

    Low: 28 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: A chance of rain and snow after noon. Partly sunny, with a high near 50. Breezy.

    High: 50 °F

    Breezy.
    Partly Sunny
    then Chance
    Rain/Snow

Detailed Forecast

Today
Mostly sunny, with a high near 54. Breezy, with a west wind 20 to 23 mph, with gusts as high as 34 mph.
Tonight
Mostly clear, with a low around 40. Breezy, with a west wind 15 to 22 mph, with gusts as high as 34 mph.
Wednesday
Sunny, with a high near 59. Breezy, with a west wind 18 to 21 mph, with gusts as high as 38 mph.
Wednesday Night
Mostly clear, with a low around 41. Breezy, with a west wind 17 to 20 mph, with gusts as high as 39 mph.
Thursday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 54. Breezy, with a west wind 18 to 24 mph, with gusts as high as 40 mph.
Thursday Night
A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 26. Blustery. Chance of precipitation is 40%.
Friday
A 40 percent chance of snow. Partly sunny, with a high near 40. Breezy.
Friday Night
Mostly cloudy, with a low around 28. Breezy.
Saturday
A chance of rain and snow after noon. Partly sunny, with a high near 50. Breezy.
Saturday Night
A slight chance of rain and snow before midnight. Partly cloudy, with a low around 33. Breezy.
Sunday
A chance of rain and snow. Partly sunny, with a high near 49. Breezy.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Breezy.
Monday
Rain and snow likely. Mostly cloudy, with a high near 48. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.82°N 105.63°W (Elev. 10735 ft)
Last Update:
12:46 am MDT Mar 24, 2026
Forecast Valid:
9am MDT Mar 24, 2026-6pm MDT Mar 30, 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