| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 37°F | 29°F | 11.1" |
| February | 17°F | 32°F | 25°F | 2.6" |
| March | 31°F | 50°F | 39°F | 6.7" |
| April | 39°F | 62°F | 50°F | 7.1" |
| May | 48°F | 74°F | 61°F | 1.6" |
| June | 61°F | 85°F | 73°F | 5.4" |
| July | 61°F | 84°F | 73°F | 5.5" |
| August | 63°F | 86°F | 74°F | 10.2" |
| September | 56°F | 79°F | 67°F | 5.9" |
| October | 47°F | 67°F | 57°F | 3.2" |
| November | 33°F | 52°F | 43°F | 5.1" |
| December | 22°F | 36°F | 29°F | 3.3" |
| Index | Celina | Ohio | National |
| Air quality index | 39 | 40 | 42 |
| Pollution index | 1,402,740 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 303 |
| Days with moderate air quality | 61 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.003% |
| Lead | 0.020% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Burkettsville, OH | 249 | 6 | 88.0% |
| Fort Recovery, OH | 1,714 | 35 | 30.0% |
| Fort Loramie, OH | 1,430 | 39 | 22.0% |
| Osgood, OH | 262 | 39 | 22.0% |
| Mendon, OH | 643 | 39 | 22.0% |
| Celina, OH | 10,498 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Timberlane, LA | 10,498 | 45 | 10.0% |
| Wyomissing, PA | 10,499 | 42 | 16.0% |
| Gunbarrel, CO | 10,494 | 47 | 6.0% |
| North Glengarry, ON | 10,494 | n/a | |
| West Vero Corridor, FL | 10,507 | 36 | 28.0% |
| Celina, OH | 10,498 | 39 | 22.0% |
Here are the best places to live in Ohio
These are the largest cities in Ohio
Check out the 10 most dangerous cities in Ohio
Most Dangerous States In The US