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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Broomfield / Jeffco (KBJC)

Lat: 39.9°NLon: 105.1°WElev: 5551ft.

A Few Clouds

88°F

31°C

Humidity 11%
Wind Speed NW 10 mph
Barometer 29.83 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 17 Jun 9:45 am MDT
Extended Forecast for

4 Miles S Rocky Flats CO

  • Today

    Today: Sunny, with a high near 93. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 31 mph.

    High: 93 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 53. Breezy, with a northwest wind 13 to 18 mph becoming light and variable after midnight. Winds could gust as high as 30 mph.

    Low: 53 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 83. South wind 5 to 10 mph becoming east northeast in the afternoon. Winds could gust as high as 16 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. East northeast wind 5 to 11 mph becoming west in the evening. Winds could gust as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 87. West northwest wind 5 to 11 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 87 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Breezy.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Saturday Night

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

    Low: 59 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 93. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 53. Breezy, with a northwest wind 13 to 18 mph becoming light and variable after midnight. Winds could gust as high as 30 mph.
Thursday
Sunny, with a high near 83. South wind 5 to 10 mph becoming east northeast in the afternoon. Winds could gust as high as 16 mph.
Thursday Night
Mostly clear, with a low around 57. East northeast wind 5 to 11 mph becoming west in the evening. Winds could gust as high as 20 mph.
Juneteenth
Mostly sunny, with a high near 87. West northwest wind 5 to 11 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 60.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Breezy.
Saturday Night
Mostly clear, with a low around 59. Breezy.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Sunday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 55.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Rocky Flats CO
 39.85°N 105.2°W (Elev. 5797 ft)
Last Update:
12:46 am MDT Jun 17, 2026
Forecast Valid:
10am MDT Jun 17, 2026-6pm MDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation