| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 12°F | 29°F | 21°F | 2.7" |
| February | 15°F | 33°F | 24°F | 1.9" |
| March | 23°F | 42°F | 33°F | 2.3" |
| April | 30°F | 54°F | 43°F | 3.1" |
| May | 37°F | 63°F | 52°F | 3.6" |
| June | 45°F | 76°F | 63°F | 3.3" |
| July | 53°F | 86°F | 74°F | 1.0" |
| August | 49°F | 84°F | 70°F | 1.7" |
| September | 40°F | 74°F | 60°F | 3.8" |
| October | 32°F | 57°F | 45°F | 2.8" |
| November | 23°F | 43°F | 34°F | 2.2" |
| December | 16°F | 31°F | 23°F | 1.5" |
| Index | Etna | 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. |
| Star Valley Ranch, WY | 2,191 | 43 | 14.0% |
| Alpine Northeast, WY | 42 | 43 | 14.0% |
| Bedford, WY | 515 | 43 | 14.0% |
| Thayne, WY | 462 | 43 | 14.0% |
| Alpine Northwest, WY | 157 | 43 | 14.0% |
| Etna, WY | 0 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Chase, AK | 0 | 31 | 38.0% |
| Chiniak, AK | 0 | 31 | 38.0% |
| Chisana, AK | 0 | 31 | 38.0% |
| Dot Lake, AK | 0 | 38 | 24.0% |
| Eureka Roadhouse, AK | 0 | 31 | 38.0% |
| Etna, WY | 0 | 43 | 14.0% |
Here are the best places to live in Wyoming
Most Dangerous Cities In The US
Check out the 10 safest cities in Wyoming
These are the 10 cheapest cities in Wyoming