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

Hazardous Weather Conditions

Current conditions at

Defiance, Defiance Memorial Airport (KDFI)

Lat: 41.34°NLon: 84.43°WElev: 705ft.

Mostly Cloudy

70°F

21°C

Humidity 84%
Wind Speed Calm
Barometer 30.03 in (1016.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 20 Jun 11:53 pm EDT
Extended Forecast for

4 Miles W Bryan OH

Extreme Heat Watch June 21, 08:00am until June 24, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Overnight

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

    Low: 69 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 90. Heat index values as high as 97. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 90 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 94. Heat index values as high as 101. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 94 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 73. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 93.

    High: 93 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny and hot, with a high near 93. Chance of precipitation is 20%.

    High: 93 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 69. South wind around 5 mph.
Saturday
Mostly sunny and hot, with a high near 90. Heat index values as high as 97. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 76. Southwest wind around 15 mph, with gusts as high as 30 mph.
Sunday
Sunny and hot, with a high near 94. Heat index values as high as 101. Southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 73. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny and hot, with a high near 93.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny and hot, with a high near 93. Chance of precipitation is 20%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Bryan OH
 41.47°N 84.64°W (Elev. 823 ft)
Last Update:
10:03 pm EDT Jun 20, 2025
Forecast Valid:
12am EDT Jun 21, 2025-6pm EDT Jun 27, 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