West Union weather by month
What a typical year looks like in West Union, Ohio: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Maysville Wastewater Treatment Plant, 24 km from West Union; records cover 1896–2026.
The year at a glance
- Precipitation a year
- 48.3 in1227 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 13
- First fall freeze
- Oct 30
- Heating degree days
- 4,851
- Cooling degree days
- 1,134
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 5°−15° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
West Union in January
Highs average 41°5° and lows 23°−5°, with 3.6 in92 mm of precipitation in a typical January.
- Record high
- 80°27° (1906)
- Record low
- −25°−32° (1994)
- Heating degree days
- 1023
- Cooling degree days
- 0
West Union in February
Highs average 45°7° and lows 24°−4°, with 3.4 in86 mm of precipitation in a typical February.
- Record high
- 79°26° (1932)
- Record low
- −22°−30° (1899)
- Heating degree days
- 847
- Cooling degree days
- 0
West Union in March
Highs average 55°13° and lows 31°0°, with 4.7 in120 mm of precipitation in a typical March.
- Record high
- 89°32° (1910)
- Record low
- 0°−18° (1943)
- Heating degree days
- 685
- Cooling degree days
- 1
West Union in April
Highs average 67°19° and lows 41°5°, with 4.7 in118 mm of precipitation in a typical April.
- Record high
- 94°34° (1899)
- Record low
- 11°−12° (1992)
- Heating degree days
- 348
- Cooling degree days
- 10
West Union in May
Highs average 75°24° and lows 51°11°, with 5.1 in128 mm of precipitation in a typical May.
- Record high
- 100°38° (1914)
- Record low
- 27°−3° (1966)
- Heating degree days
- 126
- Cooling degree days
- 77
West Union in June
Highs average 83°29° and lows 61°16°, with 4.4 in110 mm of precipitation in a typical June.
- Record high
- 105°41° (1914)
- Record low
- 37°3° (1972)
- Heating degree days
- 14
- Cooling degree days
- 224
West Union in July
Highs average 87°30° and lows 65°18°, with 5 in128 mm of precipitation in a typical July.
- Record high
- 108°42° (1901)
- Record low
- 46°8° (1988)
- Heating degree days
- 0
- Cooling degree days
- 340
West Union in August
Highs average 86°30° and lows 64°18°, with 3.4 in85 mm of precipitation in a typical August.
- Record high
- 105°41° (1911)
- Record low
- 39°4° (1986)
- Heating degree days
- 2
- Cooling degree days
- 305
West Union in September
Highs average 81°27° and lows 57°14°, with 3.5 in89 mm of precipitation in a typical September.
- Record high
- 103°39° (1899)
- Record low
- 29°−2° (1928)
- Heating degree days
- 42
- Cooling degree days
- 153
West Union in OctoberThis month
Highs average 69°20° and lows 45°7°, with 3.3 in83 mm of precipitation in a typical October.
- Record high
- 95°35° (1919)
- Record low
- 15°−9° (1925)
- Heating degree days
- 275
- Cooling degree days
- 23
West Union in November
Highs average 56°13° and lows 34°1°, with 3.2 in81 mm of precipitation in a typical November.
- Record high
- 84°29° (1950)
- Record low
- −1°−18° (1958)
- Heating degree days
- 605
- Cooling degree days
- 1
West Union in December
Highs average 45°7° and lows 28°−2°, with 4.1 in104 mm of precipitation in a typical December.
- Record high
- 78°26° (1982)
- Record low
- −20°−29° (1917)
- Heating degree days
- 884
- Cooling degree days
- 0