Gwynneville weather by month
What a typical year looks like in Gwynneville, Indiana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at SHELBYVILLE SEWAGE PLANT, 19 km from Gwynneville; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 44 in1118 mm
- Snow a year
- 15 in37 cm
- Last spring freeze
- Apr 12
- First fall freeze
- Oct 18
- Heating degree days
- 5,436
- Cooling degree days
- 988
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 93°34° (cooling, 1%).
Month by month
Gwynneville in January
Highs average 36°2° and lows 20°−7°, with 3.3 in84 mm of precipitation and 5 in13 cm of snow in a typical January.
- Record high
- 74°23° (1943)
- Record low
- −25°−32° (1994)
- Heating degree days
- 1147
- Cooling degree days
- 0
Gwynneville in February
Highs average 40°5° and lows 22°−5°, with 2.7 in68 mm of precipitation and 4 in10 cm of snow in a typical February.
- Record high
- 77°25° (1932)
- Record low
- −20°−29° (1899)
- Heating degree days
- 941
- Cooling degree days
- 0
Gwynneville in March
Highs average 51°11° and lows 31°−1°, with 3.3 in84 mm of precipitation and 1.8 in4.6 cm of snow in a typical March.
- Record high
- 87°31° (1910)
- Record low
- −5°−21° (1960)
- Heating degree days
- 744
- Cooling degree days
- 2
Gwynneville in April
Highs average 64°18° and lows 41°5°, with 4.7 in119 mm of precipitation in a typical April.
- Record high
- 93°34° (1925)
- Record low
- 12°−11° (1972)
- Heating degree days
- 384
- Cooling degree days
- 10
Gwynneville in May
Highs average 74°23° and lows 53°12°, with 4.7 in119 mm of precipitation in a typical May.
- Record high
- 98°37° (1911)
- Record low
- 25°−4° (1963)
- Heating degree days
- 139
- Cooling degree days
- 80
Gwynneville in June
Highs average 82°28° and lows 61°16°, with 4.9 in123 mm of precipitation in a typical June.
- Record high
- 103°39° (1931)
- Record low
- 36°2° (1912)
- Heating degree days
- 16
- Cooling degree days
- 217
Gwynneville in July
Highs average 85°29° and lows 64°18°, with 4.2 in106 mm of precipitation in a typical July.
- Record high
- 108°42° (1936)
- Record low
- 38°3° (1928)
- Heating degree days
- 2
- Cooling degree days
- 293
Gwynneville in August
Highs average 84°29° and lows 62°17°, with 3.2 in81 mm of precipitation in a typical August.
- Record high
- 103°39° (1911)
- Record low
- 36°2° (1908)
- Heating degree days
- 5
- Cooling degree days
- 248
Gwynneville in September
Highs average 79°26° and lows 55°13°, with 3.2 in81 mm of precipitation in a typical September.
- Record high
- 102°39° (1953)
- Record low
- 28°−2° (1927)
- Heating degree days
- 68
- Cooling degree days
- 119
Gwynneville in OctoberThis month
Highs average 66°19° and lows 43°6°, with 3.1 in80 mm of precipitation in a typical October.
- Record high
- 92°33° (1951)
- Record low
- 15°−9° (1925)
- Heating degree days
- 331
- Cooling degree days
- 18
Gwynneville in November
Highs average 52°11° and lows 33°1°, with 3.4 in87 mm of precipitation and 0.1 in0.3 cm of snow in a typical November.
- Record high
- 82°28° (1950)
- Record low
- −4°−20° (1958)
- Heating degree days
- 665
- Cooling degree days
- 1
Gwynneville in December
Highs average 41°5° and lows 25°−4°, with 3.4 in86 mm of precipitation and 4 in9 cm of snow in a typical December.
- Record high
- 82°28° (1982)
- Record low
- −24°−31° (1917)
- Heating degree days
- 994
- Cooling degree days
- 0