Heavy Rainfall Continues in Hawaii; Severe Thunderstorms and Heavy Rainfall in the Plains and Southern Appalachians

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorms and heavy rainfall will shift into the southern Appalachians today. Strong to severe thunderstorms may produce large hail, scattered wind gusts, and heavy rain today across the northern and central Plains. Read More >

Current conditions at

Davenport Municipal Airport (KDVN)

Lat: 41.61°NLon: 90.59°WElev: 741ft.

Fair

80°F

27°C

Humidity 56%
Wind Speed NW 8 mph
Barometer 30.07 in (1017.5 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 17 Aug 2:52 pm CDT
Extended Forecast for

Port Byron IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 81. Northwest wind around 5 mph.

    High: 81 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. West wind around 5 mph becoming calm.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm.  Increasing clouds, with a high near 79. Southwest wind 5 to 10 mph.  Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly between 3am and 4am.  Mostly cloudy during the evening, then mostly clear overnight, with a low around 64. West wind around 5 mph becoming calm  in the evening.

    Low: 64 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 81. Northwest wind around 5 mph.
Tonight
Mostly clear, with a low around 63. West wind around 5 mph becoming calm.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Increasing clouds, with a high near 79. Southwest wind 5 to 10 mph. Chance of precipitation is 50%.
Tuesday Night
A 50 percent chance of showers and thunderstorms, mainly between 3am and 4am. Mostly cloudy during the evening, then mostly clear overnight, with a low around 64. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 61.
Friday
Mostly sunny, with a high near 80.
Friday Night
A 40 percent chance of showers. Partly cloudy, with a low around 63.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Byron IL
 41.62°N 90.33°W (Elev. 627 ft)
1:26 pm CDT Aug 17, 2026
3pm CDT Aug 17, 2026-6pm CDT Aug 23, 2026
 
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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