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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Broomfield / Jeffco (KBJC)

Lat: 39.9°NLon: 105.1°WElev: 5551ft.

Fair and Breezy

81°F

27°C

Humidity 12%
Wind Speed W 24 G 30 mph
Barometer 29.77 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Jun 1:15 am MDT
Extended Forecast for

Louisville CO

  • Overnight

    Overnight: Mostly clear, with a low around 64. West wind around 11 mph, with gusts as high as 18 mph.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. Breezy, with a west southwest wind 11 to 20 mph becoming northwest in the morning. Winds could gust as high as 31 mph.

    High: 94 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. Breezy, with a northwest wind 13 to 18 mph becoming light and variable. Winds could gust as high as 30 mph.

    Low: 54 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 85. South southwest wind 5 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. Northeast wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 57 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Friday Night

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

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 94. Breezy.

    High: 94 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. Breezy.

    Low: 59 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 64. West wind around 11 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 94. Breezy, with a west southwest wind 11 to 20 mph becoming northwest in the morning. Winds could gust as high as 31 mph.
Wednesday Night
Mostly clear, with a low around 54. Breezy, with a northwest wind 13 to 18 mph becoming light and variable. Winds could gust as high as 30 mph.
Thursday
Sunny, with a high near 85. South southwest wind 5 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around 57. Northeast wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Juneteenth
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 59.
Saturday
Mostly sunny, with a high near 94. Breezy.
Saturday Night
Partly cloudy, with a low around 59. Breezy.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88. Breezy.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Breezy.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
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 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Louisville CO
 39.96°N 105.13°W (Elev. 5354 ft)
Last Update:
12:46 am MDT Jun 17, 2026
Forecast Valid:
1am MDT Jun 17, 2026-6pm MDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation