National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Delaware Municipal Airport (KDLZ)

Lat: 40.28°NLon: 83.11°WElev: 945ft.

Fair

59°F

15°C

Humidity 100%
Wind Speed SW 7 mph
Barometer 29.74 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 Jun 6:55 am EDT
Extended Forecast for

3 Miles WNW Sunbury OH

  • Today

    Today: Increasing clouds, with a high near 80. Southwest wind 7 to 11 mph.

    High: 80 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Showers and possibly a thunderstorm, mainly before 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Low around 67. Breezy, with a south wind 17 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 67 °F

    Breezy.
    Showers
    Likely then
    Heavy Rain

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 78. Breezy, with a west wind 17 to 20 mph, with gusts as high as 34 mph.

    High: 78 °F

    Becoming
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 76. West wind 6 to 15 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Increasing clouds, with a high near 80. Southwest wind 7 to 11 mph.
Tonight
Showers and possibly a thunderstorm, mainly before 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Low around 67. Breezy, with a south wind 17 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 78. Breezy, with a west wind 17 to 20 mph, with gusts as high as 34 mph.
Thursday Night
Partly cloudy, with a low around 57. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Juneteenth
Sunny, with a high near 76. West wind 6 to 15 mph.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms, then showers likely after 8pm. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Monday
Showers and thunderstorms likely. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Sunbury OH
 40.26°N 82.91°W (Elev. 925 ft)
Last Update:
4:00 am EDT Jun 17, 2026
Forecast Valid:
7am EDT Jun 17, 2026-6pm EDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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