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

Broomfield / Jeffco (KBJC)

Lat: 39.9°NLon: 105.1°WElev: 5551ft.

Fair

72°F

22°C

Humidity 29%
Wind Speed NE 18 G 26 mph
Barometer 30.01 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 17 Jun 10:15 pm MDT
Extended Forecast for

Derby CO

  • Tonight

    Tonight: Mostly clear, with a low around 56. Breezy, with a north northeast wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.

    Low: 56 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Light and variable wind becoming east northeast 5 to 9 mph in the morning. Winds could gust as high as 15 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59. Northeast wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly cloudy, then gradually becoming sunny, with a high near 90. North northwest wind 5 to 9 mph becoming east northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 90 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. East wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 16 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 96.

    High: 96 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89.

    High: 89 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 56. Breezy, with a north northeast wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.
Thursday
Sunny, with a high near 90. Light and variable wind becoming east northeast 5 to 9 mph in the morning. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around 59. Northeast wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Juneteenth
Mostly cloudy, then gradually becoming sunny, with a high near 90. North northwest wind 5 to 9 mph becoming east northeast in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 60. East wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 16 mph.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Mostly clear, with a low around 59.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89.
Sunday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 57.
Monday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Derby CO
 39.84°N 104.91°W (Elev. 5121 ft)
Last Update:
12:46 pm MDT Jun 17, 2026
Forecast Valid:
10pm MDT Jun 17, 2026-6pm MDT Jun 24, 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