| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 5°F | 24°F | 14°F | 0.9" |
| February | 11°F | 29°F | 20°F | 1.2" |
| March | 19°F | 39°F | 28°F | 1.6" |
| April | 26°F | 49°F | 36°F | 2.0" |
| May | 33°F | 60°F | 46°F | 2.6" |
| June | 40°F | 71°F | 56°F | 2.3" |
| July | 45°F | 81°F | 63°F | 1.6" |
| August | 42°F | 79°F | 61°F | 1.8" |
| September | 36°F | 70°F | 52°F | 3.4" |
| October | 28°F | 54°F | 40°F | 2.0" |
| November | 19°F | 39°F | 28°F | 1.9" |
| December | 8°F | 26°F | 17°F | 1.2" |
| Index | Wilson | Wyoming | National |
| Air quality index | 43 | 39 | 42 |
| Pollution index | 656,117 | 1,779,975 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 326 |
| Days with moderate air quality | 39 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Kelly, WY | 183 | 43 | 14.0% |
| Rafter J Ranch, WY | 1,412 | 43 | 14.0% |
| Teton Village, WY | 738 | 43 | 14.0% |
| South Park, WY | 1,999 | 43 | 14.0% |
| Jackson, WY | 10,585 | 43 | 14.0% |
| Wilson, WY | 1,492 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Colma, CA | 1,492 | 40 | 20.0% |
| Brudenell, Lyndoch and Raglan, ON | 1,492 | n/a | |
| Laird No. 404, SK | 1,492 | n/a | |
| Pierson, FL | 1,491 | 31 | 38.0% |
| Bedford, IA | 1,493 | 43 | 14.0% |
| Wilson, WY | 1,492 | 43 | 14.0% |
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