National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

2 Miles SW Saint Marys Glacier CO

  • Today

    Today: A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 62. Breezy, with a west northwest wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 62 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 60. Breezy, with a west northwest wind 11 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 60 °F

    Breezy. Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. Breezy, with a west wind 8 to 15 mph, with gusts as high as 26 mph.

    Low: 45 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 64. West southwest wind 9 to 14 mph becoming north northeast in the afternoon. Winds could gust as high as 25 mph.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 63.

    High: 63 °F

    Sunny then
    Showers
    Likely

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 62. Breezy, with a west northwest wind 13 to 17 mph, with gusts as high as 28 mph.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Wednesday
A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 60. Breezy, with a west northwest wind 11 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 45. Breezy, with a west wind 8 to 15 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 64. West southwest wind 9 to 14 mph becoming north northeast in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 47.
Friday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 65.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 63.
Saturday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 47. Breezy.
Sunday
Showers and possibly a thunderstorm. Partly sunny, with a high near 61. Breezy.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 45.
Monday
Showers and possibly a thunderstorm. Partly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Saint Marys Glacier CO
 39.82°N 105.69°W (Elev. 10909 ft)
Last Update:
12:46 am MDT Aug 18, 2026
Forecast Valid:
4am MDT Aug 18, 2026-6pm MDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation