Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Current conditions at

Davenport Municipal Airport (KDVN)

Lat: 41.61°NLon: 90.59°WElev: 741ft.

Fair

67°F

19°C

Humidity 84%
Wind Speed E 7 mph
Barometer 29.95 in (1013.1 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 29 Jul 2:52 am CDT
Extended Forecast for

Port Byron IL

  • Overnight

    Overnight: Mostly clear, with a low around 64. East wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65. East wind around 5 mph becoming calm.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 86. Calm wind becoming south around 5 mph in the morning.

    High: 86 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am.  Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 1pm.  High near 75. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm.  Low around 64. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 78. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 64. East wind around 5 mph.
Wednesday
Sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 65. East wind around 5 mph becoming calm.
Thursday
Increasing clouds, with a high near 86. Calm wind becoming south around 5 mph in the morning.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 67.
Friday
Showers, with thunderstorms also possible after 1pm. High near 75. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Friday Night
Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%.
Saturday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 78. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Port Byron IL
 41.62°N 90.33°W (Elev. 627 ft)
1:26 am CDT Jul 29, 2026
2am CDT Jul 29, 2026-6pm CDT Aug 4, 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