| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 44°F | 28°F | 0.2" |
| February | 19°F | 46°F | 31°F | 0.4" |
| March | 28°F | 60°F | 42°F | 0.7" |
| April | 36°F | 66°F | 49°F | 2.8" |
| May | 46°F | 75°F | 59°F | 3.7" |
| June | 57°F | 88°F | 71°F | 3.4" |
| July | 62°F | 94°F | 77°F | 2.2" |
| August | 60°F | 90°F | 74°F | 2.4" |
| September | 51°F | 84°F | 65°F | 1.4" |
| October | 38°F | 69°F | 51°F | 1.4" |
| November | 26°F | 56°F | 39°F | 0.3" |
| December | 15°F | 42°F | 27°F | 0.4" |
| Index | Wray | 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% |
| Vernon, CO | 0 | 45 | 10.0% |
| Eckley, CO | 334 | 45 | 10.0% |
| Wray, CO | 2,377 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Quanah, TX | 2,377 | 26 | 48.0% |
| Cimarron, KS | 2,376 | 15 | 70.0% |
| Stonewall, LA | 2,376 | 39 | 22.0% |
| Hermann, MO | 2,375 | 39 | 22.0% |
| Piperton, TN | 2,375 | 45 | 10.0% |
| Wray, CO | 2,377 | 45 | 10.0% |
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