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Defiance, OH Weather
Current conditions
Observed at Defiance, Defiance Memorial Airport · 1 hr ago
Forecast
10-day-
Tonight
Partly cloudy, with a low around 43. Northeast wind 0 to 5 mph.
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Wednesday
Mostly sunny, with a high near 69. North wind around 0 mph.
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Wednesday Night
Mostly clear, with a low around 40. Wind around 0 mph.
National Weather Service forecast updated 6 hrs ago.
Hourly
Hourly forecast- Now59°
- 8 PM55°
- 9 PM52°
- 10 PM51°
- 11 PM50°
- Wed12 AM48°
- 1 AM48°
- 2 AM47°
- 3 AM46°
- 4 AM45°
- 5 AM44°
- 6 AM43°
- 7 AM44°
- 8 AM44°
- 9 AM45°
- 10 AM47°
- 11 AM51°
- 12 PM55°
- 1 PM59°
- 2 PM63°
- 3 PM65°
- 4 PM67°
- 5 PM67°
- 6 PM65°
10-day forecast
Details- TodayOct 20Sunny43°69°
- WedOct 21Mostly Sunny40°69°
- ThuOct 22Sunny42°69°
- FriOct 23Sunny38°65°
- SatOct 24Sunny42°66°
- SunOct 25Mostly Sunny46°70°
- MonOct 26Mostly Sunny43°67°
- TueOct 27Cloudy41°56°
- WedOct 28Cloudy40°50°
- ThuOct 29Sunny43°60°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Defiance
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Lima, OH reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyDefiance, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Bowling Green 60 km
- Auburn 59 km
- Van Wert 50 km
- Napoleon 23 km
- Bryan 27 km
- Wauseon 34 km
- Delphos 49 km
- Waterville 58 km
- Whitehouse 53 km
- Ottawa 39 km
- Archbold 27 km
- Bluffton 58 km
Forecasters' discussion
From the National Weather Service office in IWX, issued 7 hrs ago
Key Messages
- Dry and pleasant weather persists through the entire week with highs either side of 70, lows in the 40s, and no rain until next week at the earliest.
Discussion
Issued at 126 AM EDT Tue Oct 20 2026
Upper flow across area east of the Rockies is relatively weak as mid level ridging and a couple surface high pressure centers pair to keep the area dry. As the first high pressure center moves into southeast Canada from the Northern Great Lakes, a backdoor cold front sets up east of MI and north of OH, which may be able to advect marine air into our east potentially setting them up for morning fog Wed AM. Another northern stream wave and trailing surface high pass by to the north of the area Wed through Thu time frame. Because the front washes out across the area Wed night, minimal lowering of temps occurs for Friday (from mid 60s to low 70s Thu to low to upper 60s Fri). With the mid level ridging still staunchly in place across the Plains States and Mississippi Valley, troughing in the west struggles to advance eastward and surface lows take a north-northeasterly track into Southcentral Canada. So, it could be until the first part of the next work week before we get our next rain into the area. There are hints that the mid level ridge finally pushes eastward at this time and this helps some combination of a diving wave within the northern stream and some southern stream moisture to make it up this way to provide rain.
Aviation
Issued at 1152 AM EDT Tue Oct 20 2026
Continuation of VFR conditions and light winds as high pressure dominates.
Iwx Watches
IN...None. OH...None. MI...None. MARINE...None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.