| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 13°F | 36°F | 23°F | 0.3" |
| February | 18°F | 42°F | 29°F | 1.8" |
| March | 28°F | 59°F | 42°F | 1.9" |
| April | 34°F | 63°F | 47°F | 2.3" |
| May | 44°F | 75°F | 59°F | 4.5" |
| June | 54°F | 85°F | 68°F | 3.2" |
| July | 60°F | 93°F | 76°F | 5.1" |
| August | 60°F | 89°F | 73°F | 5.3" |
| September | 51°F | 85°F | 66°F | 1.6" |
| October | 40°F | 71°F | 53°F | 5.0" |
| November | 27°F | 59°F | 41°F | 0.8" |
| December | 16°F | 42°F | 27°F | 1.0" |
| Index | Vernon | Colorado | National |
| Air quality index | 45 | 38 | 42 |
| Pollution index | 1,048,760 | 2,068,342 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 252 |
| Days with moderate air quality | 110 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.030% |
| Mercury | 0.200% |
| City | Population | Air Quality Index | National Avg. |
| Laird, CO | 24 | 19 | 62.0% |
| Eckley, CO | 334 | 45 | 10.0% |
| Wray, CO | 2,377 | 45 | 10.0% |
| Vernon, CO | 0 | 45 | 10.0% |
| 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% |
| Vernon, CO | 0 | 45 | 10.0% |
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