Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

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

Partly Cloudy

45°F

7°C

Humidity 87%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 27 May 12:35 am MDT
Extended Forecast for

2 Miles W Saint Marys Glacier CO

  • Overnight

    Overnight: A slight chance of rain and snow showers.  Mostly cloudy, with a low around 34. Southwest wind around 9 mph, with gusts as high as 15 mph.  Chance of precipitation is 20%.

    Low: 34 °F

    Slight Chance
    Rain/Snow

  • Wednesday

    Wednesday: A slight chance of snow showers before 9am, then a chance of rain and snow showers between 9am and noon, then rain showers after noon. Some thunder is also possible.  High near 46. Breezy, with a west southwest wind 9 to 15 mph becoming east southeast in the afternoon. Winds could gust as high as 24 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 46 °F

    Chance
    Rain/Snow
    then Showers
    and Breezy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms before 9pm.  Cloudy, then gradually becoming partly cloudy, with a low around 35. South wind 9 to 13 mph becoming west southwest after midnight. Winds could gust as high as 21 mph.

    Low: 35 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Showers and possibly a thunderstorm after noon.  High near 46. West wind 8 to 14 mph becoming east in the afternoon. Winds could gust as high as 23 mph.  Chance of precipitation is 80%.

    High: 46 °F

    Partly Sunny
    then Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight.  Mostly cloudy, with a low around 37. Breezy, with an east wind 9 to 18 mph becoming west after midnight. Winds could gust as high as 28 mph.  Chance of precipitation is 40%.

    Low: 37 °F

    Chance
    T-storms then
    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Rain likely, possibly mixed with snow showers after noon. Some thunder is also possible.  Mostly cloudy, with a high near 49. Breezy.  Chance of precipitation is 70%.

    High: 49 °F

    Partly Sunny
    and Breezy
    then
    Rain/Snow
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers.  Mostly cloudy, with a low around 36. Chance of precipitation is 50%.

    Low: 36 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of snow showers before 3pm, then a chance of rain and snow showers. Some thunder is also possible.  Mostly sunny, with a high near 49. Breezy.

    High: 49 °F

    Slight Chance
    Snow Showers
    then Chance
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: A slight chance of snow showers before midnight. Some thunder is also possible.  Partly cloudy, with a low around 33. Breezy.

    Low: 33 °F

    Slight Chance
    Snow Showers
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Overnight
A slight chance of rain and snow showers. Mostly cloudy, with a low around 34. Southwest wind around 9 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of snow showers before 9am, then a chance of rain and snow showers between 9am and noon, then rain showers after noon. Some thunder is also possible. High near 46. Breezy, with a west southwest wind 9 to 15 mph becoming east southeast in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday Night
A 50 percent chance of showers and thunderstorms before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 35. South wind 9 to 13 mph becoming west southwest after midnight. Winds could gust as high as 21 mph.
Thursday
Showers and possibly a thunderstorm after noon. High near 46. West wind 8 to 14 mph becoming east in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 37. Breezy, with an east wind 9 to 18 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 40%.
Friday
Rain likely, possibly mixed with snow showers after noon. Some thunder is also possible. Mostly cloudy, with a high near 49. Breezy. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 50%.
Saturday
A chance of snow showers before 3pm, then a chance of rain and snow showers. Some thunder is also possible. Mostly sunny, with a high near 49. Breezy.
Saturday Night
A slight chance of snow showers before midnight. Some thunder is also possible. Partly cloudy, with a low around 33. Breezy.
Sunday
Rain and snow showers likely after noon, becoming all rain showers after 3pm. Some thunder is also possible. Mostly sunny, with a high near 50. Breezy.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 35.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 51.
Monday Night
A chance of rain and snow showers. Some thunder is also possible. Partly cloudy, with a low around 36.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Saint Marys Glacier CO
 39.84°N 105.66°W (Elev. 11798 ft)
12:46 pm MDT May 26, 2026
12am MDT May 27, 2026-6pm MDT Jun 2, 2026
 
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Additional Resources

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