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.

Overcast

24°F

-4°C

Humidity 77%
Wind Speed NW 6 mph
Barometer 30.12 in (1020.6 mb)
Dewpoint 18°F (-8°C)
Visibility NA
Wind Chill17°F (-8°C)
Last update 3 Jan 10:52 pm CST
Extended Forecast for

Port Byron IL

  • Tonight

    Tonight: Cloudy, with a low around 22. Northwest wind around 5 mph becoming calm after midnight.

    Low: 22 °F

    Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 34. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 34 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy during the early evening, then becoming clear, with a low around 31. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Clear

  • Monday

    Monday: Partly sunny, with a high near 45. Southwest wind around 5 mph.

    High: 45 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 22. Northwest wind around 5 mph becoming calm after midnight.
Sunday
Mostly cloudy, with a high near 34. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Mostly cloudy during the early evening, then becoming clear, with a low around 31. South wind around 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 45. Southwest wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
A 30 percent chance of rain after noon. Partly sunny, with a high near 52.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 38.
Friday
A 30 percent chance of rain. Mostly cloudy, with a high near 48.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 28.
Saturday
Partly sunny, with a high near 35.
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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:
8:46 pm CST Jan 3, 2026
Forecast Valid:
11pm CST Jan 3, 2026-6pm CST Jan 10, 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