Columbus averages 20.6 days a year above 90°F, with May the wettest month at 4.78 in of normal rain. The hottest day on record was 100°F on Jul 6, 2012; the coldest, −12°F on Jan 28, 2014. The single biggest 24-hour rain event recorded was 4.37 in on Jul 6, 2022.
Climate and Average Weather Year Round in Columbus
Year-round temperature
In Columbus, the warmest months are June through September, with average daily highs between 78°F and 85°F. The coldest stretch runs December through February, with highs between 37°F and 41°F and overnight lows reaching 21°F.
Rainfall through the year
Rainfall in Columbus averages 3.7 in per month over the long run. May is the wettest at 4.8 in, while February is the driest at 2.6 in.
Days at 90 °F or hotter
Columbus averages 20.6 days per year at 90 °F or hotter. The hottest year on record saw 40 such days (2012); the coolest just 2 (2026).
Precipitation this year
As of May 28, Columbus has received 17.0 in of precipitation this year — 6% below the long-term normal for this point in the year (18.0 in).