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.

Overcast

31°F

-1°C

Humidity 91%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 14 Apr 10:55 pm MDT
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Tonight

    Tonight: A 40 percent chance of snow showers. Mostly cloudy, with a low around 15. Wind chill values as low as -3. Blustery, with a west wind 18 to 21 mph, with gusts as high as 31 mph. Total nighttime snow accumulation of 3 to 5 inches possible.

    Low: 15 °F

    Chance Snow
    Showers and
    Blustery

  • Wednesday

    Wednesday: A 20 percent chance of snow showers before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 27. Wind chill values as low as -3. Windy, with a west northwest wind 21 to 25 mph, with gusts as high as 38 mph.

    High: 27 °F

    Windy. Slight
    Chance Snow
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 20. Breezy, with a west wind 22 to 24 mph, with gusts as high as 38 mph.

    Low: 20 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 35. Windy, with a west southwest wind 23 to 28 mph, with gusts as high as 44 mph.

    High: 35 °F

    Mostly Sunny
    and Windy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 13. Windy, with a west southwest wind 23 to 28 mph decreasing to 16 to 21 mph after midnight. Winds could gust as high as 43 mph.

    Low: 13 °F

    Slight Chance
    Snow Showers
    and Windy

  • Friday

    Friday: Snow showers. The snow could be heavy at times. Some thunder is also possible. High near 18. Windy. Chance of precipitation is 90%.

    High: 18 °F

    Snow Showers
    Likely and
    Breezy then
    Heavy Snow
    and Windy

  • Friday Night

    Friday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 4. Windy. Chance of precipitation is 70%.

    Low: 4 °F

    Snow Showers
    Likely and
    Windy

  • Saturday

    Saturday: A chance of snow showers. Partly sunny, with a high near 18. Windy.

    High: 18 °F

    Chance Snow
    Showers and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 6. Breezy.

    Low: 6 °F

    Mostly Clear
    and Breezy

Detailed Forecast

Tonight
A 40 percent chance of snow showers. Mostly cloudy, with a low around 15. Wind chill values as low as -3. Blustery, with a west wind 18 to 21 mph, with gusts as high as 31 mph. Total nighttime snow accumulation of 3 to 5 inches possible.
Wednesday
A 20 percent chance of snow showers before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 27. Wind chill values as low as -3. Windy, with a west northwest wind 21 to 25 mph, with gusts as high as 38 mph.
Wednesday Night
Mostly clear, with a low around 20. Breezy, with a west wind 22 to 24 mph, with gusts as high as 38 mph.
Thursday
Mostly sunny, with a high near 35. Windy, with a west southwest wind 23 to 28 mph, with gusts as high as 44 mph.
Thursday Night
A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 13. Windy, with a west southwest wind 23 to 28 mph decreasing to 16 to 21 mph after midnight. Winds could gust as high as 43 mph.
Friday
Snow showers. The snow could be heavy at times. Some thunder is also possible. High near 18. Windy. Chance of precipitation is 90%.
Friday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 4. Windy. Chance of precipitation is 70%.
Saturday
A chance of snow showers. Partly sunny, with a high near 18. Windy.
Saturday Night
Mostly clear, with a low around 6. Breezy.
Sunday
Sunny, with a high near 32. Breezy.
Sunday Night
Partly cloudy, with a low around 16. Breezy.
Monday
A chance of snow showers. Mostly sunny, with a high near 37. Breezy.
Monday Night
A slight chance of snow showers. Partly cloudy, with a low around 23. Breezy.
Tuesday
A chance of snow showers. Mostly sunny, with a high near 38. 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:
12:46 pm MDT Apr 14, 2026
Forecast Valid:
11pm MDT Apr 14, 2026-6pm MDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation