Climate almanac
Rensselaer
Indiana, United States · 40.94°, -87.15°
What is the climate like in Rensselaer?
The best time to visit Rensselaer is typically August – September, with trip comfort peaking in September (7.3/10). Rensselaer is warmest in July, when daily highs average 85°F (29°C), and coolest in January, when lows fall to about 22°F (-6°C). The wettest month is typically May and the driest is December; the year sees roughly 44 in (1109 mm) of precipitation.
- Best time to visitAugust – September — comfort peaks in September (7.3/10)
- Warmest monthJuly — average high 85°F (29°C)
- Coolest monthJanuary — average low 22°F (-6°C)
- Wettest monthMay (5.3 in (133 mm))
- Driest monthDecember (2.5 in (63 mm))
- Annual precipitation44 in (1109 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromRensselaer Wwtp, 2 km away (1970-2026)