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.

Overcast and Breezy

24°F

-4°C

Humidity 88%
Wind Speed N 21 mph
Barometer NA
Dewpoint 21°F (-6°C)
Visibility 9.00 mi
Wind Chill9°F (-13°C)
Last update 7 Dec 6:52 am CST
Extended Forecast for

Port Byron IL

  • Today

    Today: A 20 percent chance of snow before 8am. Cloudy through mid morning, then gradual clearing, with a temperature rising to near 25 by noon, then falling to around 13 during the remainder of the day. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 25 °F⇓

    Slight Chance
    Snow then
    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 2. Wind chill values as low as -10. North wind around 5 mph becoming calm after midnight.

    Low: 2 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 25. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 25 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.

    Low: 29 °F

    Rain Likely

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 25.

    High: 25 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Today
A 20 percent chance of snow before 8am. Cloudy through mid morning, then gradual clearing, with a temperature rising to near 25 by noon, then falling to around 13 during the remainder of the day. North wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Increasing clouds, with a low around 2. Wind chill values as low as -10. North wind around 5 mph becoming calm after midnight.
Monday
Mostly cloudy, with a high near 25. Light and variable wind becoming south 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 17. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 40.
Tuesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.
Wednesday
Mostly cloudy, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 25.
Thursday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 4.
Friday
Partly sunny, with a high near 13.
Friday Night
Mostly cloudy, with a low around -4.
Saturday
Partly sunny and cold, with a high near 10.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port Byron IL
 41.62°N 90.33°W (Elev. 627 ft)
Last Update:
4:21 am CST Dec 7, 2025
Forecast Valid:
6am CST Dec 7, 2025-6pm CST Dec 13, 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