| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 58°F | 48°F | 15.3" |
| February | 41°F | 61°F | 51°F | 5.6" |
| March | 50°F | 72°F | 60°F | 2.6" |
| April | 55°F | 77°F | 66°F | 11.6" |
| May | 63°F | 84°F | 74°F | 10.4" |
| June | 71°F | 91°F | 81°F | 6.0" |
| July | 73°F | 91°F | 82°F | 9.4" |
| August | 74°F | 96°F | 85°F | 5.5" |
| September | 70°F | 92°F | 80°F | 21.5" |
| October | 56°F | 81°F | 68°F | 5.8" |
| November | 50°F | 71°F | 60°F | 7.7" |
| December | 40°F | 61°F | 49°F | 7.0" |
| Index | Hall Summit | Louisiana | National |
| Air quality index | 39 | 106 | 42 |
| Pollution index | 291,967 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 291 |
| Days with moderate air quality | 74 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.004% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Castor, LA | 310 | 39 | 22.0% |
| Coushatta, LA | 2,299 | 39 | 22.0% |
| Jamestown, LA | 111 | 39 | 22.0% |
| Edgefield, LA | 460 | 39 | 22.0% |
| Martin, LA | 890 | 39 | 22.0% |
| Hall Summit, LA | 390 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Nances Creek, AL | 390 | 43 | 14.0% |
| Turin, GA | 390 | 52 | 4.0% |
| Fort Atkinson, IA | 390 | 39 | 22.0% |
| Lee, IL | 390 | 0 | 100.0% |
| Big Lake CDP, MN | 390 | 32 | 36.0% |
| Hall Summit, LA | 390 | 39 | 22.0% |