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.

Partly Cloudy

59°F

15°C

Humidity 100%
Wind Speed S 5 mph
Barometer 29.72 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 Jun 2:15 am EDT
Extended Forecast for

4 Miles ENE Sunbury OH

  • Overnight

    Overnight: Partly cloudy, with a low around 56. Southwest wind around 8 mph.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Increasing clouds, with a high near 79. Southwest wind 7 to 11 mph.

    High: 79 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: 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 18 to 24 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 18 to 21 mph, with gusts as high as 32 mph.

    High: 78 °F

    Becoming
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. Northwest wind 5 to 11 mph.

    Low: 57 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 76.

    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 77.

    High: 77 °F

    Sunny

  • Saturday Night

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

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 56. Southwest wind around 8 mph.
Wednesday
Increasing clouds, with a high near 79. Southwest wind 7 to 11 mph.
Wednesday Night
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 18 to 24 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 18 to 21 mph, with gusts as high as 32 mph.
Thursday Night
Partly cloudy, with a low around 57. Northwest wind 5 to 11 mph.
Juneteenth
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Monday
Showers and thunderstorms likely. Mostly cloudy, with a high near 77. 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 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Sunbury OH
 40.25°N 82.79°W (Elev. 1096 ft)
Last Update:
2:13 am EDT Jun 17, 2026
Forecast Valid:
2am 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