Defiance weather by month
What a typical year looks like in Defiance, Ohio: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at DEFIANCE, 2 km from Defiance; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 37.7 in958 mm
- Snow a year
- 24 in61 cm
- Last spring freeze
- Apr 20
- First fall freeze
- Oct 22
- Heating degree days
- 6,145
- Cooling degree days
- 860
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Defiance in January
Highs average 32°0° and lows 18°−8°, with 2.6 in66 mm of precipitation and 9 in22 cm of snow in a typical January.
- Record high
- 70°21° (1896)
- Record low
- −26°−32° (1912)
- Heating degree days
- 1238
- Cooling degree days
- 0
Defiance in February
Highs average 36°2° and lows 20°−7°, with 2.2 in55 mm of precipitation and 8 in20 cm of snow in a typical February.
- Record high
- 73°23° (2000)
- Record low
- −22°−30° (1912)
- Heating degree days
- 1047
- Cooling degree days
- 0
Defiance in March
Highs average 46°8° and lows 28°−2°, with 2.6 in65 mm of precipitation and 2.6 in6.6 cm of snow in a typical March.
- Record high
- 89°32° (1907)
- Record low
- −7°−22° (1943)
- Heating degree days
- 866
- Cooling degree days
- 1
Defiance in April
Highs average 60°16° and lows 38°3°, with 3.7 in93 mm of precipitation and 0.2 in0.5 cm of snow in a typical April.
- Record high
- 91°33° (1896)
- Record low
- 4°−16° (1982)
- Heating degree days
- 483
- Cooling degree days
- 6
Defiance in May
Highs average 71°22° and lows 50°10°, with 4.3 in108 mm of precipitation in a typical May.
- Record high
- 99°37° (1911)
- Record low
- 24°−4° (1966)
- Heating degree days
- 196
- Cooling degree days
- 57
Defiance in June
Highs average 81°27° and lows 60°15°, with 3.6 in92 mm of precipitation in a typical June.
- Record high
- 107°42° (2012)
- Record low
- 35°2° (1910)
- Heating degree days
- 30
- Cooling degree days
- 188
Defiance in July
Highs average 85°29° and lows 63°17°, with 3.7 in93 mm of precipitation in a typical July.
- Record high
- 111°44° (1934)
- Record low
- 40°4° (1911)
- Heating degree days
- 2
- Cooling degree days
- 278
Defiance in August
Highs average 82°28° and lows 62°16°, with 3.5 in89 mm of precipitation in a typical August.
- Record high
- 104°40° (1934)
- Record low
- 36°2° (1965)
- Heating degree days
- 8
- Cooling degree days
- 221
Defiance in September
Highs average 77°25° and lows 54°12°, with 3.3 in83 mm of precipitation in a typical September.
- Record high
- 100°38° (1931)
- Record low
- 26°−3° (1897)
- Heating degree days
- 90
- Cooling degree days
- 96
Defiance in OctoberThis month
Highs average 63°17° and lows 43°6°, with 2.9 in73 mm of precipitation in a typical October.
- Record high
- 92°33° (1897)
- Record low
- 14°−10° (1895)
- Heating degree days
- 385
- Cooling degree days
- 13
Defiance in November
Highs average 49°9° and lows 32°0°, with 3 in76 mm of precipitation and 0.9 in2.3 cm of snow in a typical November.
- Record high
- 82°28° (1933)
- Record low
- 0°−18° (1950)
- Heating degree days
- 729
- Cooling degree days
- 0
Defiance in December
Highs average 37°3° and lows 24°−5°, with 2.6 in65 mm of precipitation and 4 in10 cm of snow in a typical December.
- Record high
- 70°21° (1982)
- Record low
- −19°−28° (1989)
- Heating degree days
- 1071
- Cooling degree days
- 0