Climate almanac

Chillicothe

Ohio, United States · 39.33°, -82.98°

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What is the climate like in Chillicothe?

The best time to visit Chillicothe is typically August – October, with trip comfort peaking in September (7.0/10). Chillicothe is warmest in July, when daily highs average 86°F (30°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically May and the driest is August; the year sees roughly 48 in (1221 mm) of precipitation.

  • Best time to visitAugust – October — comfort peaks in September (7.0/10)
  • Warmest monthJuly — average high 86°F (30°C)
  • Coolest monthJanuary — average low 27°F (-3°C)
  • Wettest monthMay (5.1 in (130 mm))
  • Driest monthAugust (3.2 in (82 mm))
  • Annual precipitation48 in (1221 mm)
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
  • Records fromChillicothe Ohio, 6 km away (2002-2026)