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

Significant Coastal Impacts to the Eastern Seaboard; Tropical Storm Nolo to Impact Hawaii

A Nor'easter will bring significant coastal impacts to the Mid-Atlantic and New England through the weekend. Moderate to major coastal flooding, heavy rain, strong winds and high surf expected. Tropical Storm Nolo will continue to strengthen as it moves north toward the Big Island of Hawaii. Heavy rainfall may bring life-threatening, catastrophic flooding and mudslides through the weekend. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

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

Overcast

58°F

14°C

Humidity 52%
Wind Speed Calm
Barometer 30.31 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 25 Sep 11:35 am MDT
Extended Forecast for

Saint Marys Glacier CO

  • Today

    Today: Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 51. South southwest wind 6 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 60%.

    High: 51 °F

    Showers
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 39. Breezy, with a west northwest wind 10 to 18 mph, with gusts as high as 29 mph.

    Low: 39 °F

    Breezy.
    Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 55. Breezy, with a west northwest wind 13 to 18 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 55 °F

    Sunny and
    Breezy then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. Light and variable wind becoming west 5 to 8 mph in the evening. Winds could gust as high as 16 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 56. West wind 5 to 8 mph becoming calm in the afternoon.

    High: 56 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 50. Chance of precipitation is 70%.

    High: 50 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 42.

    High: 42 °F

    Showers

Detailed Forecast

Today
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 51. South southwest wind 6 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 60%.
Tonight
A 30 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 39. Breezy, with a west northwest wind 10 to 18 mph, with gusts as high as 29 mph.
Saturday
Sunny, with a high near 55. Breezy, with a west northwest wind 13 to 18 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 39. Light and variable wind becoming west 5 to 8 mph in the evening. Winds could gust as high as 16 mph.
Sunday
Partly sunny, with a high near 56. West wind 5 to 8 mph becoming calm in the afternoon.
Sunday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 41.
Monday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 50. Chance of precipitation is 70%.
Monday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Mostly cloudy, with a low around 37.
Tuesday
Showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 42.
Tuesday Night
A chance of rain showers before 3am, then a chance of rain and snow showers. Mostly cloudy, with a low around 35.
Wednesday
A chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 46.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 34.
Thursday
A slight chance of rain and snow showers. Sunny, with a high near 50.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys Glacier CO
 39.82°N 105.63°W (Elev. 10735 ft)
Last Update:
9:22 am MDT Sep 25, 2026
Forecast Valid:
11am MDT Sep 25, 2026-6pm MDT Oct 1, 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