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

18°F

-8°C

Humidity 44%
Wind Speed SW 7 mph
Barometer 30.23 in
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill9°F (-13°C)
Last update 16 Mar 12:55 am MDT
Extended Forecast for

3 Miles W Saint Marys Glacier CO

  • Overnight

    Overnight: A 40 percent chance of snow showers. Patchy blowing snow. Mostly cloudy, with a low around -4. Wind chill values as low as -30. Windy, with a west northwest wind 29 to 31 mph, with gusts as high as 46 mph. Total nighttime snow accumulation of less than a half inch possible.

    Low: -4 °F

    Chance Snow
    Showers and
    Patchy
    Blowing Snow

  • Monday

    Monday: Snow showers likely. Mostly cloudy, with a high near 19. Wind chill values as low as -26. Windy, with a west northwest wind 31 to 33 mph, with gusts as high as 49 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.

    High: 19 °F

    Snow Showers
    Likely and
    Windy

  • Monday Night

    Monday Night: Snow showers likely, mainly after midnight. Mostly cloudy, with a temperature rising to around 20 by 5am. Wind chill values as low as -5. Windy, with a west northwest wind around 32 mph, with gusts as high as 49 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.

    Low: 16 °F⇑

    Snow Showers
    Likely and
    Windy

  • Tuesday

    Tuesday: A 40 percent chance of snow showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 28. Windy, with a west northwest wind 31 to 34 mph, with gusts as high as 50 mph. New snow accumulation of less than one inch possible.

    High: 28 °F

    Windy. Chance
    Snow Showers
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. Windy, with a west wind 24 to 31 mph, with gusts as high as 47 mph.

    Low: 23 °F

    Partly Cloudy
    and Windy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36. Windy.

    High: 36 °F

    Mostly Sunny
    and Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Breezy.

    Low: 25 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: Sunny, with a high near 41. Breezy.

    High: 41 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27. Breezy.

    Low: 27 °F

    Mostly Clear
    and Breezy

Detailed Forecast

Overnight
A 40 percent chance of snow showers. Patchy blowing snow. Mostly cloudy, with a low around -4. Wind chill values as low as -30. Windy, with a west northwest wind 29 to 31 mph, with gusts as high as 46 mph. Total nighttime snow accumulation of less than a half inch possible.
Monday
Snow showers likely. Mostly cloudy, with a high near 19. Wind chill values as low as -26. Windy, with a west northwest wind 31 to 33 mph, with gusts as high as 49 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.
Monday Night
Snow showers likely, mainly after midnight. Mostly cloudy, with a temperature rising to around 20 by 5am. Wind chill values as low as -5. Windy, with a west northwest wind around 32 mph, with gusts as high as 49 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.
Tuesday
A 40 percent chance of snow showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 28. Windy, with a west northwest wind 31 to 34 mph, with gusts as high as 50 mph. New snow accumulation of less than one inch possible.
Tuesday Night
Partly cloudy, with a low around 23. Windy, with a west wind 24 to 31 mph, with gusts as high as 47 mph.
Wednesday
Mostly sunny, with a high near 36. Windy.
Wednesday Night
Mostly clear, with a low around 25. Breezy.
Thursday
Sunny, with a high near 41. Breezy.
Thursday Night
Mostly clear, with a low around 27. Breezy.
Friday
Sunny, with a high near 43. Breezy.
Friday Night
Partly cloudy, with a low around 27. Blustery.
Saturday
Sunny, with a high near 44. Windy.
Saturday Night
Partly cloudy, with a low around 25. Windy.
Sunday
A slight chance of snow. Partly sunny, with a high near 39. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
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 am MDT Mar 16, 2026
Forecast Valid:
1am MDT Mar 16, 2026-6pm MDT Mar 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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