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

24°F

-4°C

Humidity 81%
Wind Speed S 16 mph
Barometer NA
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 2 Dec 9:52 pm CST
Extended Forecast for

Port Byron IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of snow, mainly before 3pm. Cloudy, with a temperature rising to near 31 by 10am, then falling to around 22 during the remainder of the day. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 31 °F⇓

    Chance Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -5. Wind chill values as low as -15. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: -5 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 12. Wind chill values as low as -15. Northwest wind around 5 mph becoming south in the afternoon.

    High: 12 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -2.

    Low: -2 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 27.

    High: 27 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 20. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
A 40 percent chance of snow, mainly before 3pm. Cloudy, with a temperature rising to near 31 by 10am, then falling to around 22 during the remainder of the day. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around -5. Wind chill values as low as -15. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 12. Wind chill values as low as -15. Northwest wind around 5 mph becoming south in the afternoon.
Thursday Night
Mostly clear, with a low around -2.
Friday
Partly sunny, with a high near 26.
Friday Night
Mostly cloudy, with a low around 15.
Saturday
Mostly cloudy, with a high near 27.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 15.
Sunday
A 30 percent chance of snow. Mostly cloudy, with a high near 23.
Sunday Night
Mostly cloudy, with a low around 4.
Monday
Partly sunny, with a high near 26.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 15.
Tuesday
Mostly cloudy, with a high near 31.
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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:
9:21 pm CST Dec 2, 2025
Forecast Valid:
10pm CST Dec 2, 2025-6pm CST Dec 9, 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