Climate almanac
Boonville
Indiana, United States · 38.05°, -87.27°
What is the climate like in Boonville?
The best time to visit Boonville is typically August – October, with trip comfort peaking in September (7.3/10). Boonville is warmest in July, when daily highs average 88°F (31°C), and coolest in January, when lows fall to about 29°F (-1°C). The wettest month is typically March and the driest is September; the year sees roughly 51 in (1297 mm) of precipitation.
- Best time to visitAugust – October — comfort peaks in September (7.3/10)
- Warmest monthJuly — average high 88°F (31°C)
- Coolest monthJanuary — average low 29°F (-1°C)
- Wettest monthMarch (5.5 in (139 mm))
- Driest monthSeptember (3.0 in (77 mm))
- Annual precipitation51 in (1297 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromBoonville 1s, 2 km away (1897-2026)