Historical weather data, all-time temperature records, and monthly climate averages for Chillicothe, OH. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Chillicothe sits right in that unpredictable shoulder season — 131 years of records show highs anywhere from 86° (1934) to a low of just 17° (1995). Expect something closer to 62° and 36° today, with about a 1-in-3 chance of rain and nearly no shot at snow.
Chillicothe has seen some serious extremes over its 133-year record, from a sweltering 107° in July 1930 to a brutal -31° in January 1994 — a swing of 138 degrees. A single day in September 2024 dropped 4.57 inches of rain, and a January 1910 storm buried the city under 14 inches of snow.
Summer is the main event here, with highs climbing to 87-88° in mid-July and staying warm through August. Winter bottoms out in early January around 41° for a high, so pack accordingly if you're visiting then. The wettest stretch of the year hits in early May, averaging about an inch of precipitation in a single week.