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 and Breezy

42°F

6°C

Humidity 89%
Wind Speed W 23 G 33 mph
Barometer 29.89 in (1012.0 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 4 Apr 7:52 am CDT
Extended Forecast for

Port Byron IL

  • Today

    Today: Cloudy, with a high near 50. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 50 °F

    Cloudy and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Breezy, with a west wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 35 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 53. West wind around 15 mph, with gusts as high as 20 mph.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. West wind around 10 mph.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 68. Breezy.

    High: 68 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

Detailed Forecast

Today
Cloudy, with a high near 50. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, with a low around 35. Breezy, with a west wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 53. West wind around 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 35. West wind around 10 mph.
Monday
Mostly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 68. Breezy.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 49.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 65.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 46.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 68.
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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:
5:47 am CDT Apr 4, 2026
Forecast Valid:
7am CDT Apr 4, 2026-6pm CDT Apr 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