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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Hazardous Weather Conditions

Current conditions at

Defiance, Defiance Memorial Airport (KDFI)

Lat: 41.34°NLon: 84.43°WElev: 705ft.

Fair

87°F

31°C

Humidity 53%
Wind Speed S 9 mph
Barometer 30.08 in (1018.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 8 Aug 4:53 pm EDT
Extended Forecast for

Defiance OH

  • Tonight

    Tonight: Mostly clear, with a low around 69. South wind around 5 mph.

    Low: 69 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 91. Heat index values as high as 98. South wind around 5 mph.

    High: 91 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 69. South wind around 5 mph.

    Low: 69 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 91. Heat index values as high as 95. Southwest wind around 5 mph.

    High: 91 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69. South wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 70. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely then
    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 69. South wind around 5 mph.
Saturday
Sunny and hot, with a high near 91. Heat index values as high as 98. South wind around 5 mph.
Saturday Night
Mostly clear, with a low around 69. South wind around 5 mph.
Sunday
Mostly sunny and hot, with a high near 91. Heat index values as high as 95. Southwest wind around 5 mph.
Sunday Night
Mostly clear, with a low around 69. South wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91.
Monday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Defiance OH
 41.28°N 84.36°W (Elev. 699 ft)
Last Update:
2:15 pm EDT Aug 8, 2025
Forecast Valid:
5pm EDT Aug 8, 2025-6pm EDT Aug 15, 2025
 
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