Ohio Annual Rainfall and Climate Data, see below for individual cities
Ohio city precipitation totals
Avg Annual Precip
Avg Annual Snow
|Avg # days of Precip||
Avg # thunderstorm days
|Avg # hail days||Avg # severe thunderstorm watches per year||Avg # tornado watches per year||# of tornadoes reported in county, 1960-2010|
Ohio Precipitation Records
- Driest location ranked by lowest annual average precipitation: Middlebourne, west-central Ohio, 30.44"
- Wettest location ranked by highest annual average precipitation: Cincinnati, southwestern Ohio, 47.54"
- Snowiest location ranked by highest annual average snowfall: Chardon, northeastern Ohio, 97.0"
- State precipitation record for 24 hours - Lockington Dam, western Ohio, 8/7-8/1995, 10.75"
- State precipitation record for 1 year - Little Mountain, northeast Ohio, 1870, 70.82"
- State snowfall record for 24 hours - Kings Mills, southwestern Ohio, 11/22-23/2004, 26.5""
- State snow record for 1 season - Chardon, northeastern Ohio, 1959-1960, 161.5"
- Ohio is one of the cloudiest places on Earth during the winter months. The cloudiest month is December when
sunshine is received only about 30% of the time, with only three to six clear days. This compares to the
well-known cloudy city of Seattle, Washington which also experiences only three to five clear days during December
- Ohio winter snowfall ranges from under 16 inches in the southern counties to around 35 inches at Toledo in the
northwest, to over 90 inches in the extreme northeastern counties where lake effect snowfall dominates
Data sources: National Climatic Data Center, Severe thunderstorm / tornado watch data period is 1999 - 2008, NOAA Storm Prediction Center, Tornado climate data - NOAA Storm Prediction Center, State lightning flash density average - 1997-2011, Vaisala