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

36°F

2°C

Humidity 53%
Wind Speed S 12 G 17 mph
Barometer 29.83 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 17 Apr 1:15 am MDT
Extended Forecast for

3 Miles W Saint Marys Glacier CO

Winter Weather Advisory April 17, 09:00am until April 17, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: A 20 percent chance of snow showers after 5am. Partly cloudy, with a low around 10. Windy, with a west wind 21 to 26 mph decreasing to 15 to 20 mph. Winds could gust as high as 41 mph.

    Low: 10 °F

    Slight Chance
    Snow Showers
    and Windy

  • Friday

    Friday: Snow showers, mainly before 3pm. The snow could be heavy at times. Widespread blowing snow, mainly after noon. Temperature falling to around 9 by 11am. Wind chill values as low as -13. Windy, with a south southwest wind 13 to 18 mph becoming west northwest 21 to 26 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 15 °F⇓

    Heavy Snow
    and Blowing
    Snow

  • Friday Night

    Friday Night: A chance of snow showers before 9pm, then a slight chance of snow showers after 3am. Patchy blowing snow before 9pm. Partly cloudy, with a low around 2. Wind chill values as low as -17. Windy, with a west wind 17 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 2 °F

    Chance Snow
    Showers and
    Patchy
    Blowing Snow

  • Saturday

    Saturday: A 20 percent chance of snow showers before noon. Mostly sunny, with a high near 20. Wind chill values as low as -19. Blustery, with a west northwest wind 17 to 23 mph, with gusts as high as 40 mph.

    High: 20 °F

    Blustery.
    Slight Chance
    Snow Showers
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 11. Breezy, with a west southwest wind 15 to 18 mph, with gusts as high as 33 mph.

    Low: 11 °F

    Partly Cloudy
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 34. Breezy.

    High: 34 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19. Breezy.

    Low: 19 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: A slight chance of snow showers after noon. Partly sunny, with a high near 38. Breezy.

    High: 38 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance Snow
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24. Blustery.

    Low: 24 °F

    Partly Cloudy
    and Blustery

Detailed Forecast

Overnight
A 20 percent chance of snow showers after 5am. Partly cloudy, with a low around 10. Windy, with a west wind 21 to 26 mph decreasing to 15 to 20 mph. Winds could gust as high as 41 mph.
Friday
Snow showers, mainly before 3pm. The snow could be heavy at times. Widespread blowing snow, mainly after noon. Temperature falling to around 9 by 11am. Wind chill values as low as -13. Windy, with a south southwest wind 13 to 18 mph becoming west northwest 21 to 26 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Friday Night
A chance of snow showers before 9pm, then a slight chance of snow showers after 3am. Patchy blowing snow before 9pm. Partly cloudy, with a low around 2. Wind chill values as low as -17. Windy, with a west wind 17 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Saturday
A 20 percent chance of snow showers before noon. Mostly sunny, with a high near 20. Wind chill values as low as -19. Blustery, with a west northwest wind 17 to 23 mph, with gusts as high as 40 mph.
Saturday Night
Partly cloudy, with a low around 11. Breezy, with a west southwest wind 15 to 18 mph, with gusts as high as 33 mph.
Sunday
Sunny, with a high near 34. Breezy.
Sunday Night
Partly cloudy, with a low around 19. Breezy.
Monday
A slight chance of snow showers after noon. Partly sunny, with a high near 38. Breezy.
Monday Night
Partly cloudy, with a low around 24. Blustery.
Tuesday
A chance of snow showers after noon. Mostly sunny, with a high near 42. Breezy.
Tuesday Night
A slight chance of snow showers. Partly cloudy, with a low around 26. Breezy.
Wednesday
A chance of snow showers. Some thunder is also possible. Partly sunny, with a high near 40. Windy.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 21. Windy.
Thursday
A chance of snow showers. Partly sunny, with a high near 30. 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:
12:46 am MDT Apr 17, 2026
Forecast Valid:
1am MDT Apr 17, 2026-6pm MDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation