Coastal Storm Impacting the Mid-Atlantic; Heavy to Excessive Rain in the Plains; Tropical Depression Seven in the Atlantic

A coastal storm continues to bring bands of heavy rain, gusty winds, minor coastal flooding, and rip currents over the Mid-Atlantic region today. Heavy rain showers and thunderstorms persist across the Plains today with possible excessive rainfall over western South Dakota. Tropical Depression Seven has formed in the central Atlantic and could become a tropical storm later today. Read More >

Hazardous Weather Conditions

Current conditions at

Davenport Municipal Airport (KDVN)

Lat: 41.61°NLon: 90.59°WElev: 741ft.

Fair

87°F

31°C

Humidity 39%
Wind Speed Vrbl 3 mph
Barometer 30.08 in (1017.7 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 17 Sep 1:52 pm CDT
Extended Forecast for

Port Byron IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 87. East wind around 5 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 61. East wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 30%.

    Low: 61 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Isolated showers and thunderstorms between 8am and noon.  Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the morning.  Chance of precipitation is 20%.

    High: 89 °F

    Isolated
    T-storms then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63. East wind around 5 mph.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm.  Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers.  Partly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 87. East wind around 5 mph.
Tonight
Scattered showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
Isolated showers and thunderstorms between 8am and noon. Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 63. East wind around 5 mph.
Friday
Partly sunny, with a high near 84.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 62.
Saturday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 85.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Sunday
Partly sunny, with a high near 83.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 63.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Monday Night
A 40 percent chance of showers. Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Byron IL
 41.62°N 90.33°W (Elev. 627 ft)
12:31 pm CDT Sep 17, 2025
2pm CDT Sep 17, 2025-6pm CDT Sep 23, 2025
 
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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