Climate almanac

Rensselaer

Indiana, United States · 40.94°, -87.15°

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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)