| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 46°F | 62°F | 53°F | 0.1" |
| February | 48°F | 65°F | 55°F | 0.0" |
| March | 54°F | 70°F | 62°F | 1.5" |
| April | 61°F | 76°F | 69°F | 0.3" |
| May | 67°F | 82°F | 74°F | 1.8" |
| June | 74°F | 87°F | 80°F | 15.7" |
| July | 75°F | 88°F | 81°F | 2.5" |
| August | 75°F | 88°F | 81°F | 4.9" |
| September | 72°F | 85°F | 78°F | 10.1" |
| October | 63°F | 79°F | 71°F | 0.0" |
| November | 53°F | 71°F | 61°F | 0.7" |
| December | 50°F | 66°F | 57°F | 3.0" |
| Index | St. George Island | Florida | National |
| Air quality index | 37 | 35 | 50 |
| Pollution index | 1,006,860 | 15,391,344 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 319 |
| Days with moderate air quality | 45 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Carrabelle, FL | 2,776 | 36 | 28% |
| Eastpoint, FL | 2,185 | 37 | 26% |
| Apalachicola, FL | 2,219 | 37 | 26% |
| St. George Island, FL | 641 | 37 | 26% |
| City, State | Population | Air Quality Index | National Avg. |
| Dill City, OK | 641 | 42 | 16% |
| Marne, OH | 641 | 36 | 28% |
| East Nassau, NY | 641 | 44 | 12% |
| Woonsocket, SD | 641 | 35 | 30% |
| Hillsboro, IN | 641 | 52 | 4% |
| St. George Island, FL | 641 | 37 | 26% |
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