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

Davenport Municipal Airport (KDVN)

Lat: 41.61°NLon: 90.59°WElev: 741ft.

Fair

45°F

7°C

Humidity 58%
Wind Speed W 14 mph
Barometer 29.90 in (1012.4 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 27 Feb 8:52 pm CST
Extended Forecast for

Port Byron IL

  • Tonight

    Tonight: Increasing clouds, with a low around 27. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 40. Northeast wind 5 to 10 mph.

    High: 40 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 19. North wind around 10 mph.

    Low: 19 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 35. Northeast wind 5 to 10 mph.

    High: 35 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance Snow

  • Monday

    Monday: Mostly cloudy, with a high near 42.

    High: 42 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: Rain likely, mainly before noon. Cloudy, with a high near 45. Chance of precipitation is 60%.

    High: 45 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

Detailed Forecast

Tonight
Increasing clouds, with a low around 27. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Mostly cloudy, with a high near 40. Northeast wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 19. North wind around 10 mph.
Sunday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 35. Northeast wind 5 to 10 mph.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 22.
Monday
Mostly cloudy, with a high near 42.
Monday Night
A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 32.
Tuesday
Rain likely, mainly before noon. Cloudy, with a high near 45. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 32.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 50.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Cloudy, with a high near 54.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 39.
Friday
A 50 percent chance of rain. Cloudy, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Byron IL
 41.62°N 90.33°W (Elev. 627 ft)
Last Update:
8:52 pm CST Feb 27, 2026
Forecast Valid:
9pm CST Feb 27, 2026-6pm CST Mar 6, 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