| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 43°F | 66°F | 53°F | 4.6" |
| February | 44°F | 69°F | 55°F | 4.0" |
| March | 50°F | 75°F | 62°F | 4.0" |
| April | 57°F | 81°F | 68°F | 4.0" |
| May | 63°F | 87°F | 75°F | 4.9" |
| June | 71°F | 90°F | 80°F | 7.0" |
| July | 73°F | 91°F | 81°F | 7.0" |
| August | 74°F | 91°F | 81°F | 8.6" |
| September | 70°F | 88°F | 78°F | 4.5" |
| October | 59°F | 82°F | 70°F | 2.0" |
| November | 49°F | 74°F | 60°F | 2.0" |
| December | 48°F | 70°F | 58°F | 3.4" |
| Index | Greenville | Florida | National |
| Air quality index | 35 | 35 | 50 |
| Pollution index | 2,420,530 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 309 |
| Days with good air quality | 255 |
| Days with moderate air quality | 54 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.070% |
| Mercury | 0.004% |
| City, State | Population | Air Quality Index | National Avg. |
| Madison, FL | 2,909 | 35 | 30% |
| Aucilla, FL | 179 | 40 | 20% |
| Lamont, FL | 212 | 40 | 20% |
| Monticello, FL | 2,000 | 40 | 20% |
| Greenville, FL | 919 | 35 | 30% |
| City, State | Population | Air Quality Index | National Avg. |
| La Cygne, KS | 919 | 47 | 6% |
| Port Vincent, LA | 919 | 45 | 10% |
| Bairdford, PA | 919 | 56 | 12% |
| La Grange, MO | 919 | 41 | 18% |
| Ranchester, WY | 919 | 39 | 22% |
| Greenville, FL | 919 | 35 | 30% |
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