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.

Partly Cloudy

44°F

7°C

Humidity 38%
Wind Speed SW 9 mph
Barometer 29.48 in (998.7 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 24 Feb 3:52 pm CST
Extended Forecast for

Port Byron IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a steady temperature around 41. West wind around 15 mph, with gusts as high as 20 mph.

    High: 41 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 22. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 22 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Sunny, with a high near 37. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 37 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow. Partly cloudy, with a low around 21. Northwest wind around 5 mph becoming east after midnight.

    Low: 21 °F

    Chance Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of snow after noon. Partly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny
    then Chance
    Snow

Detailed Forecast

This Afternoon
Mostly cloudy, with a steady temperature around 41. West wind around 15 mph, with gusts as high as 20 mph.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 22. Northwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 37. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 30 percent chance of snow. Partly cloudy, with a low around 21. Northwest wind around 5 mph becoming east after midnight.
Thursday
Mostly sunny, with a high near 45.
Thursday Night
Mostly clear, with a low around 27.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 28.
Saturday
A 30 percent chance of snow after noon. Partly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 35.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 20.
Monday
Mostly cloudy, with a high near 36.
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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:
3:52 pm CST Feb 24, 2026
Forecast Valid:
4pm CST Feb 24, 2026-6pm CST Mar 2, 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