St. Louisville weather by month
What a typical year looks like in St. Louisville, Ohio: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at NEWARK WATER WORKS, 9 km from St. Louisville; records cover 1934–2026.
The year at a glance
- Precipitation a year
- 43.4 in1102 mm
- Snow a year
- 15 in39 cm
- Last spring freeze
- Apr 29
- First fall freeze
- Oct 17
- Heating degree days
- 5,920
- Cooling degree days
- 721
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −1°−18° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
St. Louisville in January
Highs average 36°2° and lows 18°−8°, with 3.2 in82 mm of precipitation and 7 in18 cm of snow in a typical January.
- Record high
- 76°24° (1950)
- Record low
- −24°−31° (1994)
- Heating degree days
- 1168
- Cooling degree days
- 0
St. Louisville in February
Highs average 40°4° and lows 20°−7°, with 2.6 in65 mm of precipitation and 4 in10 cm of snow in a typical February.
- Record high
- 77°25° (2018)
- Record low
- −26°−32° (1951)
- Heating degree days
- 990
- Cooling degree days
- 0
St. Louisville in March
Highs average 50°10° and lows 27°−3°, with 3.6 in92 mm of precipitation and 2.2 in5.6 cm of snow in a typical March.
- Record high
- 85°29° (1945)
- Record low
- −7°−22° (1984)
- Heating degree days
- 820
- Cooling degree days
- 0
St. Louisville in April
Highs average 63°17° and lows 37°3°, with 4 in102 mm of precipitation and 0.1 in0.3 cm of snow in a typical April.
- Record high
- 90°32° (1948)
- Record low
- 12°−11° (1953)
- Heating degree days
- 456
- Cooling degree days
- 5
St. Louisville in May
Highs average 73°23° and lows 48°9°, with 4.2 in108 mm of precipitation in a typical May.
- Record high
- 95°35° (1962)
- Record low
- 23°−5° (1947)
- Heating degree days
- 196
- Cooling degree days
- 47
St. Louisville in June
Highs average 81°27° and lows 57°14°, with 4.7 in119 mm of precipitation in a typical June.
- Record high
- 101°38° (1952)
- Record low
- 32°0° (1972)
- Heating degree days
- 33
- Cooling degree days
- 156
St. Louisville in July
Highs average 84°29° and lows 61°16°, with 4.6 in116 mm of precipitation in a typical July.
- Record high
- 106°41° (1936)
- Record low
- 41°5° (1943)
- Heating degree days
- 4
- Cooling degree days
- 239
St. Louisville in August
Highs average 83°28° and lows 59°15°, with 3.9 in99 mm of precipitation in a typical August.
- Record high
- 101°38° (1948)
- Record low
- 38°3° (1950)
- Heating degree days
- 11
- Cooling degree days
- 195
St. Louisville in September
Highs average 76°25° and lows 52°11°, with 3.2 in82 mm of precipitation in a typical September.
- Record high
- 103°39° (1953)
- Record low
- 25°−4° (1942)
- Heating degree days
- 104
- Cooling degree days
- 71
St. Louisville in OctoberThis month
Highs average 64°18° and lows 40°4°, with 3.1 in79 mm of precipitation in a typical October.
- Record high
- 90°32° (1951)
- Record low
- 14°−10° (1952)
- Heating degree days
- 404
- Cooling degree days
- 8
St. Louisville in November
Highs average 52°11° and lows 31°−1°, with 3 in76 mm of precipitation and 0.2 in0.5 cm of snow in a typical November.
- Record high
- 81°27° (1950)
- Record low
- −4°−20° (1958)
- Heating degree days
- 717
- Cooling degree days
- 0
St. Louisville in December
Highs average 41°5° and lows 24°−5°, with 3.3 in84 mm of precipitation and 1.6 in4.1 cm of snow in a typical December.
- Record high
- 76°24° (1982)
- Record low
- −21°−29° (1950)
- Heating degree days
- 1017
- Cooling degree days
- 0