Boonville weather by month
What a typical year looks like in Boonville, Indiana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Evansville Regional Airport, 20 km from Boonville; records cover 1897–2026.
The year at a glance
- Precipitation a year
- 47.9 in1217 mm
- Snow a year
- 11 in27 cm
- Last spring freeze
- Apr 5
- First fall freeze
- Oct 28
- Heating degree days
- 4,338
- Cooling degree days
- 1,525
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 7°−14° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Boonville in January
Highs average 42°5° and lows 26°−4°, with 3.4 in85 mm of precipitation and 3 in9 cm of snow in a typical January.
- Record high
- 76°24° (1943)
- Record low
- −21°−29° (1977)
- Heating degree days
- 973
- Cooling degree days
- 0
Boonville in February
Highs average 47°8° and lows 28°−2°, with 3.2 in82 mm of precipitation and 3 in8 cm of snow in a typical February.
- Record high
- 79°26° (1962)
- Record low
- −23°−31° (1951)
- Heating degree days
- 769
- Cooling degree days
- 0
Boonville in March
Highs average 57°14° and lows 36°2°, with 4.6 in117 mm of precipitation and 1.1 in2.8 cm of snow in a typical March.
- Record high
- 88°31° (2026)
- Record low
- −9°−23° (1960)
- Heating degree days
- 574
- Cooling degree days
- 4
Boonville in April
Highs average 68°20° and lows 46°8°, with 5.1 in131 mm of precipitation in a typical April.
- Record high
- 91°33° (1989)
- Record low
- 23°−5° (1987)
- Heating degree days
- 261
- Cooling degree days
- 29
Boonville in May
Highs average 77°25° and lows 57°14°, with 5.1 in130 mm of precipitation in a typical May.
- Record high
- 98°37° (1911)
- Record low
- 28°−2° (1963)
- Heating degree days
- 73
- Cooling degree days
- 134
Boonville in June
Highs average 86°30° and lows 65°19°, with 4.4 in113 mm of precipitation in a typical June.
- Record high
- 107°42° (2012)
- Record low
- 41°5° (1956)
- Heating degree days
- 4
- Cooling degree days
- 319
Boonville in July
Highs average 89°31° and lows 69°20°, with 4.4 in111 mm of precipitation in a typical July.
- Record high
- 111°44° (1930)
- Record low
- 47°8° (1930)
- Heating degree days
- 0
- Cooling degree days
- 425
Boonville in August
Highs average 88°31° and lows 67°19°, with 3.1 in78 mm of precipitation in a typical August.
- Record high
- 105°41° (1930)
- Record low
- 43°6° (1986)
- Heating degree days
- 0
- Cooling degree days
- 382
Boonville in September
Highs average 82°28° and lows 59°15°, with 3.3 in84 mm of precipitation in a typical September.
- Record high
- 104°40° (1925)
- Record low
- 31°−1° (1942)
- Heating degree days
- 34
- Cooling degree days
- 191
Boonville in OctoberThis month
Highs average 70°21° and lows 47°8°, with 3.4 in86 mm of precipitation and 0.2 in0.5 cm of snow in a typical October.
- Record high
- 96°36° (2019)
- Record low
- 21°−6° (1952)
- Heating degree days
- 237
- Cooling degree days
- 39
Boonville in November
Highs average 56°13° and lows 37°3°, with 4.1 in104 mm of precipitation and 0.2 in0.5 cm of snow in a typical November.
- Record high
- 86°30° (2016)
- Record low
- −3°−19° (1950)
- Heating degree days
- 562
- Cooling degree days
- 2
Boonville in December
Highs average 46°8° and lows 30°−1°, with 3.8 in96 mm of precipitation and 2.8 in7.1 cm of snow in a typical December.
- Record high
- 77°25° (1982)
- Record low
- −15°−26° (1989)
- Heating degree days
- 851
- Cooling degree days
- 0