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

Significant Coastal Impacts to the Mid-Atlantic and Northeast; Tropical Storm Nolo to Impact Hawaii

A strong coastal storm will bring moderate to major coastal flooding, strong winds, heavy rainfall and high surf to the Mid-Atlantic and New England. Tropical Storm Nolo is expected to strengthen into a hurricane today as it moves north toward the Big Island of Hawaii. Heavy rainfall may produce life-threatening, catastrophic flooding and mudslides. Read More >

Current conditions at

Broomfield / Jeffco (KBJC)

Lat: 39.9°NLon: 105.1°WElev: 5551ft.

Fair

73°F

23°C

Humidity 36%
Wind Speed NW 9 mph
Barometer 30.26 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 24 Sep 2:48 pm MDT
Extended Forecast for

Louisville CO

  • This Afternoon

    This Afternoon: A 30 percent chance of showers. Mostly cloudy, with a high near 72. North northeast wind around 7 mph.

    High: 72 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 53. Northeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after noon. Patchy fog before 10am. Otherwise, partly sunny, with a high near 74. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 74 °F

    Patchy Fog
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 52. West southwest wind 5 to 8 mph.

    Low: 52 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83. West wind 5 to 10 mph becoming light and variable. Winds could gust as high as 17 mph.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers. Mostly cloudy, with a high near 72. North northeast wind around 7 mph.
Tonight
A chance of showers and thunderstorms. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 53. Northeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 50%.
Friday
A 40 percent chance of showers and thunderstorms after noon. Patchy fog before 10am. Otherwise, partly sunny, with a high near 74. Calm wind becoming east southeast around 6 mph in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 52. West southwest wind 5 to 8 mph.
Saturday
Sunny, with a high near 83. West wind 5 to 10 mph becoming light and variable. Winds could gust as high as 17 mph.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Mostly cloudy, with a low around 56.
Monday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 77.
Monday Night
Showers likely and possibly a thunderstorm, then showers after midnight. Mostly cloudy, with a low around 53.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 64.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 49.
Wednesday
A chance of showers. Partly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Louisville CO
 39.96°N 105.16°W (Elev. 5433 ft)
Last Update:
12:46 pm MDT Sep 24, 2026
Forecast Valid:
3pm MDT Sep 24, 2026-6pm MDT Sep 30, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation