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

25°F

-4°C

Humidity 81%
Wind Speed W 12 mph
Barometer NA
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 30 Nov 3:52 pm CST
Extended Forecast for

Port Byron IL

Winter Weather Advisory December 1, 12:00pm until December 2, 12:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 29. Northwest wind 5 to 10 mph.

    High: 29 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 10. Northwest wind around 5 mph becoming calm after midnight.

    Low: 10 °F

    Cloudy

  • Monday

    Monday: Snow, mainly after 11am. High near 25. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 25 °F

    Slight Chance
    Snow then
    Snow

  • Monday Night

    Monday Night: Snow likely, mainly before 9pm. Mostly cloudy, with a low around 11. South wind around 5 mph becoming northwest after midnight. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 11 °F

    Snow Likely
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 33.

    High: 33 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around -3.

    Low: -3 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny and cold, with a high near 10.

    High: 10 °F

    Cold

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 29. Northwest wind 5 to 10 mph.
Tonight
Cloudy, with a low around 10. Northwest wind around 5 mph becoming calm after midnight.
Monday
Snow, mainly after 11am. High near 25. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Monday Night
Snow likely, mainly before 9pm. Mostly cloudy, with a low around 11. South wind around 5 mph becoming northwest after midnight. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Tuesday
Partly sunny, with a high near 25.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Mostly cloudy, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around -3.
Thursday
Sunny and cold, with a high near 10.
Thursday Night
Partly cloudy, with a low around -4.
Friday
Mostly cloudy, with a high near 25.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Mostly cloudy, with a high near 29.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Byron IL
 41.6°N 90.33°W (Elev. 633 ft)
Last Update:
3:16 pm CST Nov 30, 2025
Forecast Valid:
4pm CST Nov 30, 2025-6pm CST Dec 6, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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