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.

Snow and Breezy

32°F

0°C

Humidity 91%
Wind Speed W 21 G 29 mph
Barometer 29.76 in
Dewpoint 30°F (-1°C)
Visibility 0.50 mi
Wind Chill20°F (-7°C)
Last update 15 Mar 12:55 am MDT
Extended Forecast for

Saint Marys Glacier CO

Winter Weather Advisory until March 15, 09:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until March 15, 09:00am

    NOW until 9:00am Sun

    Winter Weather Advisory

  • Overnight

    Low: 4 °F

    Heavy Snow
    and Blowing
    Snow

  • Sunday

    Sunday: Snow likely, mainly before noon. Widespread blowing snow, mainly before noon. Partly sunny, with a high near 11. Wind chill values as low as -21. Windy, with a northwest wind 29 to 34 mph, with gusts as high as 55 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    High: 11 °F

    Snow Likely
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Widespread blowing snow before midnight. Partly cloudy, with a low around 7. Wind chill values as low as -14. Windy, with a west northwest wind 20 to 30 mph, with gusts as high as 47 mph.

    Low: 7 °F

    Slight Chance
    Snow and
    Blowing Snow

  • Monday

    Monday: A 20 percent chance of snow. Mostly sunny, with a high near 27. Wind chill values as low as -13. Windy, with a west wind 28 to 32 mph, with gusts as high as 48 mph.

    High: 27 °F

    Slight Chance
    Snow and
    Windy

  • Monday Night

    Monday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 25. Windy, with a west wind 32 to 34 mph, with gusts as high as 50 mph.

    Low: 25 °F

    Chance Snow
    and Windy

  • Tuesday

    Tuesday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 40. Very windy.

    High: 40 °F

    Slight Chance
    Snow and Very
    Windy then
    Sunny and
    Windy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 33. Windy.

    Low: 33 °F

    Mostly Clear
    and Windy

  • Wednesday

    Wednesday: Sunny, with a high near 49. Windy.

    High: 49 °F

    Sunny and
    Windy

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Widespread blowing snow. Low around 4. Wind chill values as low as -14. Very windy, with a northwest wind 37 to 43 mph, with gusts as high as 70 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 4 to 8 inches possible.
Sunday
Snow likely, mainly before noon. Widespread blowing snow, mainly before noon. Partly sunny, with a high near 11. Wind chill values as low as -21. Windy, with a northwest wind 29 to 34 mph, with gusts as high as 55 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Sunday Night
A 20 percent chance of snow before midnight. Widespread blowing snow before midnight. Partly cloudy, with a low around 7. Wind chill values as low as -14. Windy, with a west northwest wind 20 to 30 mph, with gusts as high as 47 mph.
Monday
A 20 percent chance of snow. Mostly sunny, with a high near 27. Wind chill values as low as -13. Windy, with a west wind 28 to 32 mph, with gusts as high as 48 mph.
Monday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 25. Windy, with a west wind 32 to 34 mph, with gusts as high as 50 mph.
Tuesday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 40. Very windy.
Tuesday Night
Mostly clear, with a low around 33. Windy.
Wednesday
Sunny, with a high near 49. Windy.
Wednesday Night
Mostly clear, with a low around 34. Breezy.
Thursday
Sunny, with a high near 53. Breezy.
Thursday Night
Mostly clear, with a low around 36. Breezy.
Friday
Sunny, with a high near 54. Breezy.
Friday Night
Mostly clear, with a low around 34. Breezy.
Saturday
Sunny, with a high near 56. 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 15, 2026
Forecast Valid:
1am MDT Mar 15, 2026-6pm MDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation