Climate almanac

Plymouth

Indiana, United States · 41.34°, -86.31°

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What is the climate like in Plymouth?

The best time to visit Plymouth is typically August – September, with trip comfort peaking in September (7.2/10). Plymouth is warmest in July, when daily highs average 84°F (29°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 (1110 mm) of precipitation.

  • Best time to visitAugust – September — comfort peaks in September (7.2/10)
  • Warmest monthJuly — average high 84°F (29°C)
  • Coolest monthJanuary — average low 22°F (-5°C)
  • Wettest monthMay (5.0 in (126 mm))
  • Driest monthNovember (2.6 in (67 mm))
  • Annual precipitation44 in (1110 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromPlymouth, 2 km away (1989-2026)