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.

Fair

45°F

7°C

Humidity 31%
Wind Speed SW 18 G 24 mph
Barometer 30.09 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 13 Mar 10:15 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

  • Tonight

    Tonight: Mostly clear, with a low around 22. Very windy, with a west wind 33 to 37 mph, with gusts as high as 55 mph.

    Low: 22 °F

    Mostly Clear
    and Very
    Windy

  • Saturday

    Saturday: A 50 percent chance of snow, mainly after 3pm. Mostly sunny, with a high near 31. Very windy, with a west wind 33 to 43 mph, with gusts as high as 60 mph. New snow accumulation of less than a half inch possible.

    High: 31 °F

    Very Windy.
    Mostly Sunny
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow. The snow could be heavy at times. Low around -4. Wind chill values as low as -24. Very windy, with a west wind 32 to 41 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    Low: -4 °F

    Heavy Snow
    and Very
    Windy

  • Sunday

    Sunday: Snow, mainly before noon. High near 1. Wind chill values as low as -31. Windy, with a west northwest wind 30 to 33 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 1 °F

    Windy. Snow
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around -2. Windy, with a west wind 27 to 32 mph decreasing to 20 to 25 mph in the evening. Winds could gust as high as 48 mph.

    Low: -2 °F

    Chance Snow
    and Windy
    then Mostly
    Cloudy and
    Breezy

  • Monday

    Monday: A 40 percent chance of snow. Mostly cloudy, with a high near 20. Windy.

    High: 20 °F

    Chance Snow
    and Windy

  • Monday Night

    Monday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18. Very windy.

    Low: 18 °F

    Chance Snow
    and Very
    Windy

  • Tuesday

    Tuesday: A slight chance of snow before noon. Mostly cloudy, with a high near 30. Very windy.

    High: 30 °F

    Very Windy.
    Slight Chance
    Snow then
    Partly Sunny

  • Tuesday Night

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

    Low: 24 °F

    Partly Cloudy
    and Windy

Detailed Forecast

Tonight
Mostly clear, with a low around 22. Very windy, with a west wind 33 to 37 mph, with gusts as high as 55 mph.
Saturday
A 50 percent chance of snow, mainly after 3pm. Mostly sunny, with a high near 31. Very windy, with a west wind 33 to 43 mph, with gusts as high as 60 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Snow. The snow could be heavy at times. Low around -4. Wind chill values as low as -24. Very windy, with a west wind 32 to 41 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Sunday
Snow, mainly before noon. High near 1. Wind chill values as low as -31. Windy, with a west northwest wind 30 to 33 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around -2. Windy, with a west wind 27 to 32 mph decreasing to 20 to 25 mph in the evening. Winds could gust as high as 48 mph.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 20. Windy.
Monday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18. Very windy.
Tuesday
A slight chance of snow before noon. Mostly cloudy, with a high near 30. Very windy.
Tuesday Night
Partly cloudy, with a low around 24. Windy.
Wednesday
Sunny, with a high near 37. Windy.
Wednesday Night
Mostly clear, with a low around 25. Breezy.
Thursday
Sunny, with a high near 41. Windy.
Thursday Night
Partly cloudy, with a low around 25. Blustery.
Friday
Sunny, with a high near 43. Breezy.
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Forecast Area
Tiles ©ESRI

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 13, 2026
Forecast Valid:
10pm MDT Mar 13, 2026-6pm MDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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