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 >

Current conditions at

Granby-Grand County Airport (KGNB)

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

Fair

55°F

13°C

Humidity 49%
Wind Speed N 5 mph
Barometer 30.17 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 18 Jun 12:55 am MDT
Extended Forecast for

3 Miles WSW Berthoud Falls CO

Fire Weather Watch June 20, 12:00pm until June 20, 09:00pm
Click here for hazard details and duration
Fire Weather Watch
  • Overnight

    Overnight: Mostly clear, with a low around 39. South southwest wind around 10 mph, with gusts as high as 16 mph.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 69. Breezy, with a west southwest wind 11 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 33 mph.

    High: 69 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. Breezy, with a west wind 15 to 20 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 31 mph.

    Low: 41 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 71. Breezy, with a west wind 8 to 15 mph becoming north in the afternoon. Winds could gust as high as 29 mph.

    High: 71 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. North northeast wind 11 to 14 mph becoming south southwest after midnight. Winds could gust as high as 28 mph.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 70. Windy.

    High: 70 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36. Windy.

    Low: 36 °F

    Mostly Clear
    and Windy
    then Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after noon.  Sunny, with a high near 64. Breezy.

    High: 64 °F

    Breezy. Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 35. Breezy.

    Low: 35 °F

    Slight Chance
    T-storms and
    Breezy then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 39. South southwest wind around 10 mph, with gusts as high as 16 mph.
Thursday
Sunny, with a high near 69. Breezy, with a west southwest wind 11 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 33 mph.
Thursday Night
Mostly clear, with a low around 41. Breezy, with a west wind 15 to 20 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 31 mph.
Juneteenth
Mostly sunny, with a high near 71. Breezy, with a west wind 8 to 15 mph becoming north in the afternoon. Winds could gust as high as 29 mph.
Friday Night
Partly cloudy, with a low around 39. North northeast wind 11 to 14 mph becoming south southwest after midnight. Winds could gust as high as 28 mph.
Saturday
Sunny, with a high near 70. Windy.
Saturday Night
Mostly clear, with a low around 36. Windy.
Sunday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 64. Breezy.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 35. Breezy.
Monday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 63. Breezy.
Monday Night
Mostly clear, with a low around 36. Breezy.
Tuesday
Sunny, with a high near 66. Breezy.
Tuesday Night
Mostly clear, with a low around 38. Breezy.
Wednesday
Sunny, with a high near 68. Breezy.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Berthoud Falls CO
 39.74°N 105.85°W (Elev. 11079 ft)
12:46 am MDT Jun 18, 2026
1am MDT Jun 18, 2026-6pm MDT Jun 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database