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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

62°F

17°C

Humidity 44%
Wind Speed NE 3 mph
Barometer 30.16 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 17 Jun 11:35 pm MDT
Extended Forecast for

2 Miles WSW LONG'S PEAK CO

  • Tonight

    Tonight: Mostly clear, with a low around 34. Southwest wind around 11 mph, with gusts as high as 18 mph.

    Low: 34 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 56. Breezy, with a west wind 11 to 20 mph, with gusts as high as 31 mph.

    High: 56 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36. Breezy, with a west wind 10 to 18 mph, with gusts as high as 28 mph.

    Low: 36 °F

    Partly Cloudy
    and Breezy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 54. Breezy, with a west wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 54 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. Breezy, with a west wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 38 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 55. Very windy.

    High: 55 °F

    Sunny and
    Very Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. Very windy.

    Low: 35 °F

    Mostly Clear
    and Very
    Windy

  • Sunday

    Sunday: A slight chance of rain and snow showers after noon. Some thunder is also possible. Sunny, with a high near 50. Windy.

    High: 50 °F

    Windy. Sunny
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of rain and snow showers before midnight. Some thunder is also possible. Mostly cloudy, with a low around 33. Breezy.

    Low: 33 °F

    Chance
    Rain/Snow and
    Breezy then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 34. Southwest wind around 11 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 56. Breezy, with a west wind 11 to 20 mph, with gusts as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 36. Breezy, with a west wind 10 to 18 mph, with gusts as high as 28 mph.
Juneteenth
Mostly sunny, with a high near 54. Breezy, with a west wind 10 to 15 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 38. Breezy, with a west wind 10 to 15 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 55. Very windy.
Saturday Night
Mostly clear, with a low around 35. Very windy.
Sunday
A slight chance of rain and snow showers after noon. Some thunder is also possible. Sunny, with a high near 50. Windy.
Sunday Night
A chance of rain and snow showers before midnight. Some thunder is also possible. Mostly cloudy, with a low around 33. Breezy.
Monday
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.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 35.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 53. Breezy.
Tuesday Night
Mostly clear, with a low around 36. Breezy.
Wednesday
Sunny, with a high near 55. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW LONG'S PEAK CO
 40.24°N 105.65°W (Elev. 12001 ft)
Last Update:
12:46 pm MDT Jun 17, 2026
Forecast Valid:
11pm MDT Jun 17, 2026-6pm MDT Jun 24, 2026
 
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