National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Davenport Municipal Airport (KDVN)

Lat: 41.61°NLon: 90.59°WElev: 741ft.

Fair

53°F

12°C

Humidity 52%
Wind Speed S 16 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 20 Apr 10:52 pm CDT
Extended Forecast for

Port Byron IL

  • Tonight

    Tonight: Partly cloudy, with a low around 49. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 55. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. Southwest wind 5 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 79. Breezy.

    High: 79 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 69. Chance of precipitation is 50%.

    High: 69 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 49. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 55. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 77. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Mostly sunny, with a high near 79. Breezy.
Thursday Night
Showers and possibly a thunderstorm. Low around 57. Chance of precipitation is 80%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 69. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 45.
Sunday
Partly sunny, with a high near 63.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 62.
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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:
9:52 pm CDT Apr 20, 2026
Forecast Valid:
11pm CDT Apr 20, 2026-6pm CDT Apr 27, 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