| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 53°F | 72°F | 63°F | 3.2" |
| February | 53°F | 73°F | 65°F | 15.4" |
| March | 58°F | 78°F | 69°F | 2.3" |
| April | 64°F | 83°F | 75°F | 3.3" |
| May | 68°F | 87°F | 79°F | 8.0" |
| June | 73°F | 90°F | 82°F | 16.6" |
| July | 75°F | 90°F | 83°F | 10.7" |
| August | 75°F | 91°F | 83°F | 8.3" |
| September | 74°F | 89°F | 82°F | 7.8" |
| October | 68°F | 84°F | 77°F | 2.7" |
| November | 60°F | 77°F | 69°F | 0.8" |
| December | 57°F | 75°F | 67°F | 3.3" |
| Index | Williamsburg | Florida | National |
| Air quality index | 39 | 35 | 42 |
| Pollution index | 713,198 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 296 |
| Days with moderate air quality | 63 |
| Days w/ poor A.Q. for sensitive groups | 6 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Bay Hill, FL | 4,815 | 39 | 22.0% |
| Clarcona, FL | 4,687 | 39 | 22.0% |
| Horizon West, FL | 46,204 | 39 | 22.0% |
| Lake Butler city, FL | 2,185 | 39 | 22.0% |
| Windermere, FL | 3,497 | 39 | 22.0% |
| Williamsburg, FL | 7,520 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Meridianville, AL | 7,520 | 44 | 12.0% |
| Haddon Heights, NJ | 7,520 | 51 | 2.0% |
| Auburn, GA | 7,519 | 37 | 26.0% |
| Port Jefferson Station, NY | 7,516 | 43 | 14.0% |
| Locust Grove, GA | 7,525 | 52 | 4.0% |
| Williamsburg, FL | 7,520 | 39 | 22.0% |
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