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

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

41°F

5°C

Humidity 54%
Wind Speed Calm
Barometer 30.26 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 29 Mar 8:55 am MDT
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Today

    Today: A 20 percent chance of snow showers after 2pm. Mostly sunny, with a high near 40. Windy, with a west wind 21 to 25 mph, with gusts as high as 38 mph.

    High: 40 °F

    Slight Chance
    Snow Showers
    and Windy

  • Tonight

    Tonight: Partly cloudy, with a low around 27. Breezy, with a west wind 20 to 23 mph, with gusts as high as 38 mph.

    Low: 27 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: A 40 percent chance of snow showers after noon. Partly sunny, with a high near 46. Windy, with a west wind 23 to 30 mph, with gusts as high as 50 mph. Little or no snow accumulation expected.

    High: 46 °F

    Windy. Mostly
    Sunny then
    Chance Snow
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of snow showers, mainly after midnight. Mostly cloudy, with a low around 23. Windy, with a west wind 23 to 28 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 46 mph. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Chance Snow
    Showers and
    Windy

  • Tuesday

    Tuesday: Snow showers. High near 34. Breezy, with a west southwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 90%.

    High: 34 °F

    Breezy. Snow
    Showers
    Likely then
    Snow Showers

  • Tuesday Night

    Tuesday Night: Snow showers. The snow could be heavy at times. Low around 18. Breezy. Chance of precipitation is 90%.

    Low: 18 °F

    Heavy Snow
    and Breezy

  • Wednesday

    Wednesday: Snow showers. Some thunder is also possible. High near 27. Breezy. Chance of precipitation is 90%.

    High: 27 °F

    Snow Showers
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before midnight. Mostly cloudy, with a low around 18. Breezy.

    Low: 18 °F

    Snow Showers
    and Breezy

  • Thursday

    Thursday: Snow showers likely, mainly after noon. Partly sunny, with a high near 31. Windy.

    High: 31 °F

    Snow Showers
    Likely and
    Windy

Detailed Forecast

Today
A 20 percent chance of snow showers after 2pm. Mostly sunny, with a high near 40. Windy, with a west wind 21 to 25 mph, with gusts as high as 38 mph.
Tonight
Partly cloudy, with a low around 27. Breezy, with a west wind 20 to 23 mph, with gusts as high as 38 mph.
Monday
A 40 percent chance of snow showers after noon. Partly sunny, with a high near 46. Windy, with a west wind 23 to 30 mph, with gusts as high as 50 mph. Little or no snow accumulation expected.
Monday Night
A 40 percent chance of snow showers, mainly after midnight. Mostly cloudy, with a low around 23. Windy, with a west wind 23 to 28 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 46 mph. New snow accumulation of less than a half inch possible.
Tuesday
Snow showers. High near 34. Breezy, with a west southwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 90%.
Tuesday Night
Snow showers. The snow could be heavy at times. Low around 18. Breezy. Chance of precipitation is 90%.
Wednesday
Snow showers. Some thunder is also possible. High near 27. Breezy. Chance of precipitation is 90%.
Wednesday Night
Snow showers, mainly before midnight. Mostly cloudy, with a low around 18. Breezy.
Thursday
Snow showers likely, mainly after noon. Partly sunny, with a high near 31. Windy.
Thursday Night
Snow showers likely. Mostly cloudy, with a low around 13. Windy.
Friday
Snow showers. The snow could be heavy at times. Mostly cloudy, with a high near 17. Windy.
Friday Night
Snow showers likely. The snow could be heavy at times. Mostly cloudy, with a low around 6. Windy.
Saturday
A chance of snow showers. Partly sunny, with a high near 19. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Saint Marys Glacier CO
 39.84°N 105.69°W (Elev. 12507 ft)
Last Update:
2:39 am MDT Mar 29, 2026
Forecast Valid:
9am MDT Mar 29, 2026-6pm MDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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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