NOAA NCEI Climate Normals 1991–2020
Ohio Weather by Month
Temperature, rain and the hurricane season at 111 Ohio stations, month by month.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
The median station records 41.4 inches of precipitation a year; Chardon, OH records the most, 50.7 inches, and Toledo Metcalf Field, OH the least, 32.5 (1.6 times as much). July is the hottest month at the median station (average high 84°F); the hottest July is at Fairfield, OH, 87°F. January is the coldest (average low 20°F); the coldest January nights are at Hiram, OH, 16°F. Highs reach 90°F on 14 days a year at the median station and on 39 at Dayton Mcd, OH, the most. Snowfall is heaviest at Chardon, OH, 113.7 inches a year.
This page compares the 1991–2020 NOAA climate normals of 111 Ohio weather stations, each the nearest station with full normals to at least one of the 604 Ohio cities on this site that have one within 25 miles.
At the median station, June is the wettest month (4.4 inches) and February the driest (2.4). Station by station, the wettest month is June at 50, May at 33 and July at 21 of the 111, and the driest February at 93, November at 11 and January at 3. The gap between the wettest and driest station is widest in July: 2.9 inches.
Month by month across Ohio
High, low and precipitation are the median of the 111 stations; the station columns name the station with the highest average high, the lowest average low, and the most and least precipitation that month, each linked to the city page it serves. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Hurricane season in Ohio
June to November, the hurricane season months, bring 52% of the year's precipitation at the median station, from 46% at Chilo Meldahl Locks & Dam, OH to 60% at Ashtabula Co Airport, OH. Since 1851, 17 tropical systems have passed within 75 miles of a Ohio city on this site, 0 of them at hurricane strength at their closest point to one; September has brought the most (7), then October (4). None came outside June to November.
| Month | Tropical systems | At hurricane strength | Median precip. in |
|---|---|---|---|
| Jan | 0 | 0 | 2.9 |
| Feb | 0 | 0 | 2.4 |
| Mar | 0 | 0 | 3.2 |
| Apr | 0 | 0 | 3.9 |
| May | 0 | 0 | 4.3 |
| Jun | 3 | 0 | 4.4 |
| Jul | 0 | 0 | 4.2 |
| Aug | 3 | 0 | 3.5 |
| Sep | 7 | 0 | 3.2 |
| Oct | 4 | 0 | 3.0 |
| Nov | 0 | 0 | 3.0 |
| Dec | 0 | 0 | 3.1 |
Tropical systems from NOAA NHC HURDAT2 that passed within 75 miles of a Ohio city on this site, each counted once, in the month of its first such pass; hurricane strength is the track's wind at its closest point to a city.
Coastal water temperature by month
Across 3 NOAA tide stations, the water is warmest in July (median 76°F, up to 77°F at Marblehead, OH) and coolest in February (median 35°F, down to 33°F at Marblehead, OH). No month averages 80°F at the median station.
| Station | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fairport, OH | 35 | 35 | 42 | 52 | 59 | 69 | 76 | 76 | 71 | 61 | 47 | 37 |
| Marblehead, OH | 33 | 33 | 39 | 49 | 59 | 70 | 77 | 76 | 72 | 61 | 49 | 38 |
| Cleveland, OH | 40 | 40 | 42 | 49 | 57 | 66 | 74 | 75 | 72 | 64 | 54 | 42 |
°F, average of hourly readings 2021–2025; a month counts when at least three years have half their hours on record. Source: NOAA Tides & Currents; the newest readings are preliminary.
Ohio cities and their stations
| City | Station | Miles | Hottest month high °F | Coldest month low °F | Year precip. in |
|---|---|---|---|---|---|
| Cleveland | Cleveland Burke Airport, OH | 3 | 81 | 24 | 33.3 |
| Dayton | Dayton Mcd, OH | 2 | 87 | 20 | 41.6 |
| Chillicothe | Waverly, OH | 15 | 86 | 22 | 43.7 |
| Celina | Celina 3 NE, OH | 3 | 84 | 19 | 40.1 |
| Bellbrook | Dayton Wright Bros Airport, OH | 8 | 86 | 22 | 40.9 |
How stations are matched to cities and what normals are: methodology · other states by month