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

28°F

-2°C

Humidity 72%
Wind Speed W 13 G 21 mph
Barometer 30.08 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 11 Mar 12:55 am MDT
Extended Forecast for

3 Miles W Saint Marys Glacier CO

High Wind Watch March 12, 03:00am until March 13, 06:00am
Click here for hazard details and duration
High Wind Watch

  • Overnight

    Overnight: Snow showers, mainly before 4am. Low around 3. Wind chill values as low as -20. Windy, with a west northwest wind 26 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 3 to 5 inches possible.

    Low: 3 °F

    Snow Showers
    and Windy

  • Wednesday

    Wednesday: A 20 percent chance of snow showers before 9am. Sunny, with a high near 16. Wind chill values as low as -22. Windy, with a west northwest wind 29 to 32 mph, with gusts as high as 48 mph.

    High: 16 °F

    Windy. Slight
    Chance Snow
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 11. Wind chill values as low as -10. Windy, with a west wind 26 to 34 mph, with gusts as high as 50 mph.

    Low: 11 °F

    Mostly Clear
    and Windy

  • Thursday

    Thursday: Mostly sunny, with a high near 25. Wind chill values as low as -11. Strong and damaging winds, with a west wind 40 to 45 mph increasing to 50 to 55 mph in the afternoon. Winds could gust as high as 80 mph.

    High: 25 °F

    Mostly Sunny
    and Damaging
    Winds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 19. Very windy, with a west wind 44 to 49 mph decreasing to 36 to 41 mph after midnight. Winds could gust as high as 75 mph.

    Low: 19 °F

    Mostly Cloudy
    and Very
    Windy

  • Friday

    Friday: Mostly sunny, with a high near 28. Very windy.

    High: 28 °F

    Mostly Sunny
    and Very
    Windy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 23. Very windy.

    Low: 23 °F

    Partly Cloudy
    and Very
    Windy

  • Saturday

    Saturday: A chance of snow showers after noon. Partly sunny, with a high near 31. Very windy.

    High: 31 °F

    Very Windy.
    Partly Sunny
    then Chance
    Snow Showers

  • Saturday Night

    Saturday Night: Snow likely. Mostly cloudy, with a low around 10. Very windy.

    Low: 10 °F

    Snow Likely
    and Very
    Windy

Detailed Forecast

Overnight
Snow showers, mainly before 4am. Low around 3. Wind chill values as low as -20. Windy, with a west northwest wind 26 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 3 to 5 inches possible.
Wednesday
A 20 percent chance of snow showers before 9am. Sunny, with a high near 16. Wind chill values as low as -22. Windy, with a west northwest wind 29 to 32 mph, with gusts as high as 48 mph.
Wednesday Night
Mostly clear, with a low around 11. Wind chill values as low as -10. Windy, with a west wind 26 to 34 mph, with gusts as high as 50 mph.
Thursday
Mostly sunny, with a high near 25. Wind chill values as low as -11. Strong and damaging winds, with a west wind 40 to 45 mph increasing to 50 to 55 mph in the afternoon. Winds could gust as high as 80 mph.
Thursday Night
Mostly cloudy, with a low around 19. Very windy, with a west wind 44 to 49 mph decreasing to 36 to 41 mph after midnight. Winds could gust as high as 75 mph.
Friday
Mostly sunny, with a high near 28. Very windy.
Friday Night
Partly cloudy, with a low around 23. Very windy.
Saturday
A chance of snow showers after noon. Partly sunny, with a high near 31. Very windy.
Saturday Night
Snow likely. Mostly cloudy, with a low around 10. Very windy.
Sunday
Snow likely. Mostly cloudy, with a high near 16. Very windy.
Sunday Night
Snow likely. Cloudy, with a low around 14. Windy.
Monday
Snow likely. Mostly cloudy, with a high near 25. Very windy.
Monday Night
A chance of snow. Mostly cloudy, with a low around 24. Very windy.
Tuesday
A slight chance of snow. Partly sunny, with a high near 34. 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:
12:47 am MDT Mar 11, 2026
Forecast Valid:
1am MDT Mar 11, 2026-6pm MDT Mar 17, 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