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

53°F

12°C

Humidity 23%
Wind Speed W 17 G 39 mph
Barometer 29.89 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 14 Mar 1:35 pm MDT
Extended Forecast for

3 Miles W Saint Marys Glacier CO

Winter Weather Advisory March 14, 06:00pm until March 15, 09:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: A 30 percent chance of snow after 3pm. Areas of blowing snow. Mostly sunny, with a high near 31. Very windy, with a west wind 38 to 41 mph, with gusts as high as 70 mph. Total daytime snow accumulation of less than a half inch possible.

    High: 31 °F

    Chance Snow
    and Areas
    Blowing Snow

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Widespread blowing snow. Low around -6. Wind chill values as low as -26. Very windy, with a west wind 33 to 40 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    Low: -6 °F

    Heavy Snow
    and Blowing
    Snow

  • Sunday

    Sunday: Snow likely, mainly before noon. Widespread blowing snow. Mostly cloudy and cold, with a high near 3. Wind chill values as low as -33. Windy, with a northwest wind 28 to 30 mph, with gusts as high as 50 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 3 °F

    Snow Likely
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Widespread blowing snow, mainly before 9pm. Partly cloudy, with a low around -1. Wind chill values as low as -25. Windy, with a west wind 29 to 34 mph decreasing to 21 to 26 mph in the evening. Winds could gust as high as 55 mph.

    Low: -1 °F

    Slight Chance
    Snow and
    Blowing Snow

  • Monday

    Monday: A 40 percent chance of snow. Mostly cloudy, with a high near 19. Windy, with a west wind 25 to 34 mph, with gusts as high as 55 mph.

    High: 19 °F

    Chance Snow
    and Windy

  • Monday Night

    Monday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. Windy.

    Low: 16 °F

    Windy. Slight
    Chance Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow before noon. Partly sunny, with a high near 30. Very windy.

    High: 30 °F

    Slight Chance
    Snow and Very
    Windy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24. Windy.

    Low: 24 °F

    Partly Cloudy
    and Windy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 39. Windy.

    High: 39 °F

    Mostly Sunny
    and Windy

Detailed Forecast

This Afternoon
A 30 percent chance of snow after 3pm. Areas of blowing snow. Mostly sunny, with a high near 31. Very windy, with a west wind 38 to 41 mph, with gusts as high as 70 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow. The snow could be heavy at times. Widespread blowing snow. Low around -6. Wind chill values as low as -26. Very windy, with a west wind 33 to 40 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Sunday
Snow likely, mainly before noon. Widespread blowing snow. Mostly cloudy and cold, with a high near 3. Wind chill values as low as -33. Windy, with a northwest wind 28 to 30 mph, with gusts as high as 50 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 20 percent chance of snow before midnight. Widespread blowing snow, mainly before 9pm. Partly cloudy, with a low around -1. Wind chill values as low as -25. Windy, with a west wind 29 to 34 mph decreasing to 21 to 26 mph in the evening. Winds could gust as high as 55 mph.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 19. Windy, with a west wind 25 to 34 mph, with gusts as high as 55 mph.
Monday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. Windy.
Tuesday
A 20 percent chance of snow before noon. Partly sunny, with a high near 30. Very windy.
Tuesday Night
Partly cloudy, with a low around 24. Windy.
Wednesday
Mostly sunny, with a high near 39. Windy.
Wednesday Night
Mostly clear, with a low around 25. Breezy.
Thursday
Sunny, with a high near 42. Breezy.
Thursday Night
Mostly clear, with a low around 26. Blustery.
Friday
Sunny, with a high near 43. Breezy.
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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 pm MDT Mar 14, 2026
Forecast Valid:
1pm MDT Mar 14, 2026-6pm MDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation