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

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Broomfield / Jeffco (KBJC)

Lat: 39.9°NLon: 105.1°WElev: 5551ft.

Overcast

52°F

11°C

Humidity 72%
Wind Speed S 6 mph
Barometer 30.14 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 20 May 9:35 pm MDT
Extended Forecast for

Blue Valley CO

  • Tonight

    Tonight: Partly cloudy, with a low around 25. West southwest wind 5 to 7 mph.

    Low: 25 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of snow showers after noon, mixing with rain after 1pm. Some thunder is also possible. Increasing clouds, with a high near 48. West southwest wind 5 to 8 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 48 °F

    Mostly Sunny
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow showers before 9pm, then a chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 28. West wind 5 to 7 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Friday

    Friday: A 30 percent chance of snow showers, mainly after noon. Some thunder is also possible. Mostly sunny, with a high near 47. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 18 mph. Little or no snow accumulation expected.

    High: 47 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: A chance of rain and snow showers before 9pm, then a chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 31. East southeast wind 5 to 10 mph becoming light and variable. Winds could gust as high as 17 mph. Chance of precipitation is 50%.

    Low: 31 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: A chance of rain and snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 52. Chance of precipitation is 30%.

    High: 52 °F

    Mostly Sunny
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34. Breezy.

    Low: 34 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 64. Breezy.

    High: 64 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 25. West southwest wind 5 to 7 mph.
Thursday
A chance of snow showers after noon, mixing with rain after 1pm. Some thunder is also possible. Increasing clouds, with a high near 48. West southwest wind 5 to 8 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow showers before 9pm, then a chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 28. West wind 5 to 7 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Friday
A 30 percent chance of snow showers, mainly after noon. Some thunder is also possible. Mostly sunny, with a high near 47. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 18 mph. Little or no snow accumulation expected.
Friday Night
A chance of rain and snow showers before 9pm, then a chance of snow showers. Some thunder is also possible. Mostly cloudy, with a low around 31. East southeast wind 5 to 10 mph becoming light and variable. Winds could gust as high as 17 mph. Chance of precipitation is 50%.
Saturday
A chance of rain and snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 52. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 34. Breezy.
Sunday
Mostly sunny, with a high near 64. Breezy.
Sunday Night
Partly cloudy, with a low around 39.
Memorial Day
Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 66.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 41.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 63.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 40.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Blue Valley CO
 39.7°N 105.5°W (Elev. 10197 ft)
Last Update:
12:46 pm MDT May 20, 2026
Forecast Valid:
9pm MDT May 20, 2026-6pm MDT May 27, 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