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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Delaware Municipal Airport (KDLZ)

Lat: 40.28°NLon: 83.11°WElev: 945ft.

Fog/Mist

72°F

22°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 30.25 in
Dewpoint 72°F (22°C)
Visibility 6.00 mi
Last update 17 Sep 5:35 am EDT
Extended Forecast for

Delaware OH

Flood Watch September 17, 05:55am until September 17, 02:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 17, 05:55am until September 17, 02:00pm

    NOW until 2:00pm Thu

    Flood Watch

  • Overnight

    Low: 71 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely before 3pm, then a slight chance of thunderstorms after 5pm. Mostly cloudy, with a high near 85. Northwest wind 3 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 85 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. North wind 3 to 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 79. Northeast wind 6 to 9 mph.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. East wind 6 to 9 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 68. Chance of precipitation is 80%.

    Low: 68 °F

    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 2pm. High near 82. Chance of precipitation is 80%.

    High: 82 °F

    Showers

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light southwest wind. Chance of precipitation is 20%.
Thursday
Showers and thunderstorms likely before 3pm, then a slight chance of thunderstorms after 5pm. Mostly cloudy, with a high near 85. Northwest wind 3 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. North wind 3 to 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Partly sunny, with a high near 79. Northeast wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 59. East wind 6 to 9 mph.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 68. Chance of precipitation is 80%.
Sunday
Showers, with thunderstorms also possible after 2pm. High near 82. Chance of precipitation is 80%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Monday
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Delaware OH
 40.29°N 83.08°W (Elev. 899 ft)
Last Update:
4:00 am EDT Sep 17, 2026
Forecast Valid:
5am EDT Sep 17, 2026-6pm EDT Sep 23, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation