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

50°F

10°C

Humidity 74%
Wind Speed W 10 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 29 Apr 2:52 am CDT
Extended Forecast for

Port Byron IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 46. Northwest wind 5 to 10 mph.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 60. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 60 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39. Northwest wind 5 to 10 mph.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 59. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 59 °F

    Sunny then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy frost after 2am. Otherwise, partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy
    then Patchy
    Frost

  • Saturday

    Saturday: Patchy frost before 8am. Otherwise, sunny, with a high near 60.

    High: 60 °F

    Patchy Frost
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 46. Northwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 60. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 39. Northwest wind 5 to 10 mph.
Thursday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 59. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 56.
Friday Night
Patchy frost after 2am. Otherwise, partly cloudy, with a low around 36.
Saturday
Patchy frost before 8am. Otherwise, sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 71.
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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:
2:26 am CDT Apr 29, 2026
Forecast Valid:
3am CDT Apr 29, 2026-6pm CDT May 5, 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