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

72°F

22°C

Humidity 84%
Wind Speed Calm
Barometer 30.13 in (1019.8 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 10 Aug 3:53 am EDT
Extended Forecast for

Bryan OH

  • Today

    Today: Mostly sunny and hot, with a high near 90. Heat index values as high as 98. South wind 5 to 10 mph.

    High: 90 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 69. South wind around 5 mph.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 90. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the morning.

    High: 90 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 89 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Showers
    Likely then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers. Mostly sunny, with a high near 84.

    High: 84 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Mostly sunny and hot, with a high near 90. Heat index values as high as 98. South wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 69. South wind around 5 mph.
Monday
Mostly sunny and hot, with a high near 90. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the morning.
Monday Night
Partly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Wednesday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 63.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Friday Night
A slight chance of thunderstorms. Mostly clear, with a low around 67. Chance of precipitation is 10%.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bryan OH
 41.46°N 84.55°W (Elev. 748 ft)
Last Update:
3:31 am EDT Aug 10, 2025
Forecast Valid:
4am EDT Aug 10, 2025-6pm EDT Aug 16, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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