St. Clairsville weather by month
What a typical year looks like in St. Clairsville, Ohio: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Wheeling Ohio County Airport, 24 km from St. Clairsville; records cover 1881–2026.
The year at a glance
- Precipitation a year
- 37.6 in954 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 24
- First fall freeze
- Oct 23
- Heating degree days
- 5,419
- Cooling degree days
- 781
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 4°−16° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
St. Clairsville in January
Highs average 37°3° and lows 22°−5°, with 2.8 in70 mm of precipitation in a typical January.
- Record high
- 76°24° (1950)
- Record low
- −25°−32° (1982)
- Heating degree days
- 1096
- Cooling degree days
- 0
St. Clairsville in February
Highs average 40°5° and lows 24°−4°, with 2.2 in55 mm of precipitation in a typical February.
- Record high
- 78°26° (2018)
- Record low
- −26°−32° (1934)
- Heating degree days
- 917
- Cooling degree days
- 0
St. Clairsville in March
Highs average 50°10° and lows 31°0°, with 3 in76 mm of precipitation in a typical March.
- Record high
- 89°32° (1921)
- Record low
- −11°−24° (1943)
- Heating degree days
- 761
- Cooling degree days
- 2
St. Clairsville in April
Highs average 63°17° and lows 42°5°, with 3.1 in80 mm of precipitation in a typical April.
- Record high
- 92°33° (1925)
- Record low
- 5°−15° (1923)
- Heating degree days
- 399
- Cooling degree days
- 10
St. Clairsville in May
Highs average 72°22° and lows 51°11°, with 4 in102 mm of precipitation in a typical May.
- Record high
- 96°36° (1919)
- Record low
- 19°−7° (1947)
- Heating degree days
- 169
- Cooling degree days
- 53
St. Clairsville in June
Highs average 79°26° and lows 59°15°, with 4.1 in105 mm of precipitation in a typical June.
- Record high
- 100°38° (1933)
- Record low
- 31°−1° (1930)
- Heating degree days
- 31
- Cooling degree days
- 148
St. Clairsville in July
Highs average 83°28° and lows 63°17°, with 3.4 in85 mm of precipitation in a typical July.
- Record high
- 106°41° (1934)
- Record low
- 38°3° (1945)
- Heating degree days
- 3
- Cooling degree days
- 254
St. Clairsville in August
Highs average 82°28° and lows 62°16°, with 3.7 in95 mm of precipitation in a typical August.
- Record high
- 106°41° (1918)
- Record low
- 34°1° (1931)
- Heating degree days
- 7
- Cooling degree days
- 215
St. Clairsville in September
Highs average 75°24° and lows 55°13°, with 3.2 in82 mm of precipitation in a typical September.
- Record high
- 103°39° (1953)
- Record low
- 24°−4° (1956)
- Heating degree days
- 83
- Cooling degree days
- 84
St. Clairsville in OctoberThis month
Highs average 64°18° and lows 45°7°, with 2.8 in71 mm of precipitation in a typical October.
- Record high
- 91°33° (1939)
- Record low
- 16°−9° (1930)
- Heating degree days
- 349
- Cooling degree days
- 15
St. Clairsville in November
Highs average 51°11° and lows 35°2°, with 2.7 in67 mm of precipitation in a typical November.
- Record high
- 86°30° (1961)
- Record low
- −6°−21° (1958)
- Heating degree days
- 654
- Cooling degree days
- 0
St. Clairsville in December
Highs average 41°5° and lows 28°−2°, with 2.6 in67 mm of precipitation in a typical December.
- Record high
- 77°25° (1982)
- Record low
- −17°−27° (1983)
- Heating degree days
- 950
- Cooling degree days
- 0