Climate almanac

Saint John

Indiana, US · 41.45°, -87.47°

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What is the climate like in Saint John?

The best time to visit Saint John is typically August – September, with trip comfort peaking in September (7.2/10). Saint John is warmest in July, when daily highs average 83°F (28°C), and coolest in January, when lows fall to about 22°F (-5°C). The wettest month is typically May and the driest is November; the year sees roughly 44 in of precipitation.

  • Best time to visitAugust – September — comfort peaks in September (7.2/10)
  • Warmest monthJuly — average high 83°F (28°C)
  • Coolest monthJanuary — average low 22°F (-5°C)
  • Wettest monthMay (5.1 in)
  • Driest monthNovember (2.5 in)
  • Annual precipitation44 in