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

29°F

-2°C

Humidity 68%
Wind Speed E 5 mph
Barometer 29.76 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 7 Jan 10:55 pm MST
Extended Forecast for

Saint Marys Glacier CO

Winter Weather Advisory until January 9, 11:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until January 9, 11:00am

    NOW until 11:00am Fri

    Winter Weather Advisory

  • Tonight

    Low: 17 °F

    Snow Likely

  • Thursday

    Thursday: Snow. High near 20. West northwest wind 5 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 20 °F

    Snow

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times. Low around 5. Wind chill values as low as -9. West northwest wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 5 °F

    Heavy Snow

  • Friday

    Friday: Snow likely, mainly before 11am. Areas of blowing snow. Partly sunny and cold, with a high near 10. Wind chill values as low as -15. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 10 °F

    Snow Likely
    and Areas
    Blowing Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly before 11pm. Areas of blowing snow. Partly cloudy, with a low around 2. Windy, with a west wind 22 to 31 mph, with gusts as high as 55 mph.

    Low: 2 °F

    Chance Snow
    and Areas
    Blowing Snow

  • Saturday

    Saturday: A 10 percent chance of snow. Mostly sunny, with a high near 18. Windy.

    High: 18 °F

    Slight Chance
    Snow and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 10. Breezy.

    Low: 10 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 29. Breezy.

    High: 29 °F

    Sunny and
    Breezy then
    Sunny

Detailed Forecast

Tonight
Snow likely, mainly after 2am. Mostly cloudy, with a low around 17. West wind 3 to 8 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.
Thursday
Snow. High near 20. West northwest wind 5 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Low around 5. Wind chill values as low as -9. West northwest wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Friday
Snow likely, mainly before 11am. Areas of blowing snow. Partly sunny and cold, with a high near 10. Wind chill values as low as -15. Blustery, with a west northwest wind 15 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
A 30 percent chance of snow, mainly before 11pm. Areas of blowing snow. Partly cloudy, with a low around 2. Windy, with a west wind 22 to 31 mph, with gusts as high as 55 mph.
Saturday
A 10 percent chance of snow. Mostly sunny, with a high near 18. Windy.
Saturday Night
Mostly clear, with a low around 10. Breezy.
Sunday
Sunny, with a high near 29. Breezy.
Sunday Night
Partly cloudy, with a low around 15. Breezy.
Monday
Sunny, with a high near 28. Breezy.
Monday Night
Partly cloudy, with a low around 15. Breezy.
Tuesday
A slight chance of snow. Partly sunny, with a high near 27. Breezy.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 18. Breezy.
Wednesday
A slight chance of snow. Mostly sunny, with a high near 28. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.82°N 105.63°W (Elev. 10735 ft)
Last Update:
7:53 pm MST Jan 7, 2026
Forecast Valid:
11pm MST Jan 7, 2026-6pm MST Jan 14, 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