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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Broomfield / Jeffco (KBJC)

Lat: 39.9°NLon: 105.1°WElev: 5551ft.

Fair

64°F

18°C

Humidity 49%
Wind Speed Calm
Barometer 30.21 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 18 Aug 5:35 am MDT
Extended Forecast for

Arvada CO

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 90. Calm wind becoming south southeast 5 to 9 mph in the afternoon.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 62. South southeast wind 5 to 8 mph becoming light and variable after midnight.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. Calm wind becoming east southeast 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. Southeast wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Light and variable wind becoming east 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 90. Calm wind becoming south southeast 5 to 9 mph in the afternoon.
Tonight
Mostly clear, with a low around 62. South southeast wind 5 to 8 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 91. Calm wind becoming east southeast 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 62. Southeast wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 93. Light and variable wind becoming east 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 96.
Thursday Night
Partly cloudy, with a low around 63.
Friday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 83.
Friday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Arvada CO
 39.83°N 105.09°W (Elev. 5548 ft)
Last Update:
4:00 am MDT Aug 18, 2025
Forecast Valid:
5am MDT Aug 18, 2025-6pm MDT Aug 24, 2025
 
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