| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 43°F | 63°F | 52°F | 4.8" |
| February | 47°F | 65°F | 55°F | 7.2" |
| March | 53°F | 73°F | 62°F | 1.6" |
| April | 61°F | 80°F | 70°F | 11.3" |
| May | 68°F | 86°F | 77°F | 12.1" |
| June | 75°F | 91°F | 82°F | 7.7" |
| July | 75°F | 91°F | 82°F | 11.6" |
| August | 74°F | 92°F | 82°F | 7.1" |
| September | 70°F | 89°F | 78°F | 2.4" |
| October | 59°F | 82°F | 69°F | 3.7" |
| November | 50°F | 72°F | 60°F | 1.8" |
| December | 46°F | 66°F | 55°F | 3.2" |
| Index | Kaplan | Louisiana | National |
| Air quality index | 41 | 106 | 42 |
| Pollution index | 1,171,580 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 280 |
| Days with moderate air quality | 85 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.004% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Erath, LA | 2,286 | 41 | 18.0% |
| Estherwood, LA | 676 | 41 | 18.0% |
| Maurice, LA | 2,186 | 41 | 18.0% |
| Gueydan, LA | 1,184 | 41 | 18.0% |
| Milton, LA | 2,068 | 41 | 18.0% |
| Kaplan, LA | 4,463 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Buhl, ID | 4,462 | 20 | 60.0% |
| Fabens, TX | 4,462 | 53 | 6.0% |
| Heritage Village, CT | 4,465 | 41 | 18.0% |
| Wamego, KS | 4,465 | 32 | 36.0% |
| Sauk Centre, MN | 4,466 | 32 | 36.0% |
| Kaplan, LA | 4,463 | 41 | 18.0% |
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