| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 30°F | 52°F | 40°F | 9.4" |
| February | 33°F | 56°F | 43°F | 6.6" |
| March | 41°F | 65°F | 52°F | 7.6" |
| April | 49°F | 75°F | 61°F | 8.5" |
| May | 57°F | 80°F | 68°F | 8.0" |
| June | 65°F | 89°F | 76°F | 4.2" |
| July | 68°F | 90°F | 78°F | 7.3" |
| August | 67°F | 90°F | 77°F | 6.7" |
| September | 61°F | 85°F | 71°F | 7.0" |
| October | 48°F | 75°F | 60°F | 8.0" |
| November | 38°F | 63°F | 49°F | 7.2" |
| December | 35°F | 55°F | 43°F | 11.2" |
| Index | Guin | Alabama | National |
| Air quality index | 39 | 37 | 50 |
| Pollution index | 1,799,140 | 4,051,223 | 5,066,862 |
| Measurement | Total |
| Days measured | 241 |
| Days with good air quality | 222 |
| Days with moderate air quality | 19 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City, State | Population | Air Quality Index | National Avg. |
| Glen Allen, AL | 474 | 35 | 30% |
| Winfield, AL | 4,448 | 35 | 30% |
| Gu-Win, AL | 142 | 35 | 30% |
| Brilliant, AL | 1,049 | 37 | 26% |
| Hamilton, AL | 6,784 | 39 | 22% |
| Guin, AL | 2,458 | 39 | 22% |
| City, State | Population | Air Quality Index | National Avg. |
| Gloucester Courthouse, VA | 2,458 | 40 | 20% |
| Circle D-KC Estates, TX | 2,457 | 44 | 12% |
| Mountain City, TN | 2,457 | 26 | 48% |
| New Lisbon, WI | 2,459 | 35 | 30% |
| Waller, TX | 2,459 | 52 | 4% |
| Guin, AL | 2,458 | 39 | 22% |
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