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

60°F

16°C

Humidity 56%
Wind Speed N 3 mph
Barometer 30.49 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 14 Jul 12:55 am MDT
Extended Forecast for

Saint Marys Glacier CO

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 50. Southwest wind 9 to 11 mph, with gusts as high as 18 mph.

    Low: 50 °F

    Partly Cloudy

  • Monday

    Monday: Showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 65. Northwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    High: 65 °F

    Sunny then
    Showers
    Likely

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 49. Breezy, with a west wind 8 to 13 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 20%.

    Low: 49 °F

    Breezy.
    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. Breezy, with a west wind 11 to 20 mph becoming north northwest in the afternoon. Winds could gust as high as 29 mph.

    High: 64 °F

    Sunny and
    Breezy then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 47. Northwest wind 10 to 14 mph becoming southwest in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    Low: 47 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 45. Chance of precipitation is 50%.

    Low: 45 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny
    then T-storms
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 50. Southwest wind 9 to 11 mph, with gusts as high as 18 mph.
Monday
Showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 65. Northwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Monday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 49. Breezy, with a west wind 8 to 13 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 20%.
Tuesday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. Breezy, with a west wind 11 to 20 mph becoming north northwest in the afternoon. Winds could gust as high as 29 mph.
Tuesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 47. Northwest wind 10 to 14 mph becoming southwest in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Wednesday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Wednesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 45. Chance of precipitation is 50%.
Thursday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 61.
Thursday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 47.
Friday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 62.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 47.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 62.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 48. Breezy.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 63. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.85°N 105.63°W (Elev. 11368 ft)
Last Update:
2:21 pm MDT Jul 13, 2025
Forecast Valid:
1am MDT Jul 14, 2025-6pm MDT Jul 20, 2025
 
Forecast Discussion
 
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Additional Resources

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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