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

35°F

2°C

Humidity 85%
Wind Speed SW 7 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 7 Mar 10:52 pm CDT
Extended Forecast for

Port Byron IL

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 65. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 45. Southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

  • Tuesday

    Tuesday: Rain likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Sunny then
    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 35. Chance of precipitation is 90%.

    Low: 35 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before noon. Mostly cloudy, with a high near 47. Chance of precipitation is 60%.

    High: 47 °F

    Rain Likely
    then Chance
    Rain

  • Wednesday Night

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

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 34. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 65. Southwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Clear, with a low around 45. Southwest wind around 15 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Clear, with a low around 48.
Tuesday
Rain likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 74. Chance of precipitation is 60%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 35. Chance of precipitation is 90%.
Wednesday
Rain likely, mainly before noon. Mostly cloudy, with a high near 47. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 25.
Thursday
Partly sunny, with a high near 48.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 39. Breezy.
Friday
Mostly cloudy, with a high near 58. Breezy.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
Mostly cloudy, with a high near 44.
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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:
8:37 pm CST Mar 7, 2026
Forecast Valid:
10pm CST Mar 7, 2026-6pm CDT Mar 14, 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