Climate averages 1991–2020
Columbus weather
by month.
See how the year changes. July has the highest average daily maximum; February has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Columbus averages a daytime high of 16.2°C and a nighttime low of 6.9°C, with about 1,057 mm of rain on roughly 127 days. July is the warmest month (average high 28.3°C) and January the coolest (2.2°C). April is the wettest month with 115 mm; February is the driest with 71 mm.
The annual picture
A year in Columbus
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Columbus climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.2°C-6.1°C | -6.1°C | 84 | 10.7 | 9.710 h |
| February | 4.4°C-4.7°C | -4.7°C | 71 | 9.4 | 10.711 h |
| March | 9.7°C-0.2°C | -0.2°C | 98 | 11.2 | 11.912 h |
| April | 16.6°C5.6°C | 5.6°C | 115 | 12.4 | 13.213 h |
| May | 21.8°C11.6°C | 11.6°C | 113 | 13.3 | 14.414 h |
| June | 26.3°C16.8°C | 16.8°C | 103 | 11.9 | 15.015 h |
| July | 28.3°C19.0°C | 19.0°C | 88 | 11.1 | 14.715 h |
| August | 27.8°C18.3°C | 18.3°C | 73 | 9.6 | 13.714 h |
| September | 24.3°C14.6°C | 14.6°C | 73 | 8.3 | 12.512 h |
| October | 17.5°C8.3°C | 8.3°C | 74 | 9.0 | 11.211 h |
| November | 10.3°C2.1°C | 2.1°C | 80 | 9.4 | 10.010 h |
| December | 4.5°C-2.7°C | -2.7°C | 86 | 10.3 | 9.49 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- DaytonUnited States · 104 kmHigh 16.3°C · Low 7.5°C · 1,066 mm rain a year
- CincinnatiUnited States · 160 kmHigh 17.1°C · Low 7.7°C · 1,087 mm rain a year
- Canton (Ohio), United StatesUnited States · 166 kmHigh 15.1°C · Low 6.2°C · 1,053 mm rain a year
- MeadsUnited States · 174 kmHigh 18.5°C · Low 9.2°C · 1,176 mm rain a year
- AkronUnited States · 177 kmHigh 15.0°C · Low 6.0°C · 1,058 mm rain a year
- Parma, United StatesUnited States · 193 kmHigh 14.4°C · Low 6.6°C · 1,070 mm rain a year
- Toledo, United StatesUnited States · 195 kmHigh 14.6°C · Low 6.2°C · 894 mm rain a year
- ClevelandUnited States · 203 kmHigh 14.2°C · Low 7.0°C · 1,070 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-5, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 40.00°, -83.00° (4 km from the city centre). Rain comes from the 0.25° cell at 40.00°, -83.00°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.