Oak Harbor weather by month
What a typical year looks like in Oak Harbor, Ohio: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at FREMONT, 19 km from Oak Harbor; records cover 1901–2026.
The year at a glance
- Precipitation a year
- 38.2 in970 mm
- Snow a year
- 26 in67 cm
- Last spring freeze
- Apr 28
- First fall freeze
- Oct 18
- Heating degree days
- 6,027
- Cooling degree days
- 874
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 95°35° (cooling, 1%).
Month by month
Oak Harbor in January
Highs average 34°1° and lows 19°−7°, with 2.7 in69 mm of precipitation and 8 in21 cm of snow in a typical January.
- Record high
- 73°23° (1906)
- Record low
- −20°−29° (1994)
- Heating degree days
- 1206
- Cooling degree days
- 0
Oak Harbor in February
Highs average 37°3° and lows 20°−7°, with 2.4 in61 mm of precipitation and 7 in18 cm of snow in a typical February.
- Record high
- 75°24° (2000)
- Record low
- −17°−27° (1918)
- Heating degree days
- 1028
- Cooling degree days
- 0
Oak Harbor in March
Highs average 47°8° and lows 28°−2°, with 2.8 in71 mm of precipitation and 4 in9 cm of snow in a typical March.
- Record high
- 86°30° (2012)
- Record low
- −5°−21° (1978)
- Heating degree days
- 861
- Cooling degree days
- 1
Oak Harbor in April
Highs average 60°16° and lows 38°3°, with 3.8 in97 mm of precipitation and 1 in2.5 cm of snow in a typical April.
- Record high
- 93°34° (1925)
- Record low
- 6°−14° (1923)
- Heating degree days
- 486
- Cooling degree days
- 5
Oak Harbor in May
Highs average 72°22° and lows 49°10°, with 3.8 in97 mm of precipitation in a typical May.
- Record high
- 96°36° (1929)
- Record low
- 27°−3° (1966)
- Heating degree days
- 200
- Cooling degree days
- 59
Oak Harbor in June
Highs average 81°27° and lows 60°15°, with 4.1 in104 mm of precipitation in a typical June.
- Record high
- 107°42° (1925)
- Record low
- 38°3° (1930)
- Heating degree days
- 30
- Cooling degree days
- 192
Oak Harbor in July
Highs average 85°29° and lows 63°17°, with 3.6 in92 mm of precipitation in a typical July.
- Record high
- 110°43° (1934)
- Record low
- 44°7° (1907)
- Heating degree days
- 3
- Cooling degree days
- 284
Oak Harbor in August
Highs average 83°28° and lows 61°16°, with 3.4 in86 mm of precipitation in a typical August.
- Record high
- 105°41° (1918)
- Record low
- 34°1° (1934)
- Heating degree days
- 7
- Cooling degree days
- 223
Oak Harbor in September
Highs average 77°25° and lows 54°12°, with 3.2 in82 mm of precipitation in a typical September.
- Record high
- 105°41° (1953)
- Record low
- 30°−1° (1934)
- Heating degree days
- 90
- Cooling degree days
- 96
Oak Harbor in OctoberThis month
Highs average 64°18° and lows 42°6°, with 2.9 in74 mm of precipitation in a typical October.
- Record high
- 93°34° (1953)
- Record low
- 19°−7° (1925)
- Heating degree days
- 378
- Cooling degree days
- 14
Oak Harbor in November
Highs average 50°10° and lows 33°0°, with 2.8 in70 mm of precipitation and 0.9 in2.3 cm of snow in a typical November.
- Record high
- 80°27° (2016)
- Record low
- 0°−18° (1958)
- Heating degree days
- 704
- Cooling degree days
- 0
Oak Harbor in December
Highs average 39°4° and lows 25°−4°, with 2.6 in66 mm of precipitation and 5 in13 cm of snow in a typical December.
- Record high
- 72°22° (1982)
- Record low
- −17°−27° (1989)
- Heating degree days
- 1034
- Cooling degree days
- 0