| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 43°F | 29°F | 0.3" |
| February | 17°F | 43°F | 29°F | 0.6" |
| March | 24°F | 54°F | 38°F | 0.8" |
| April | 29°F | 59°F | 43°F | 1.7" |
| May | 38°F | 66°F | 51°F | 2.3" |
| June | 48°F | 81°F | 64°F | 1.9" |
| July | 55°F | 87°F | 70°F | 2.4" |
| August | 53°F | 85°F | 68°F | 1.6" |
| September | 45°F | 77°F | 60°F | 1.4" |
| October | 33°F | 63°F | 47°F | 1.2" |
| November | 24°F | 53°F | 38°F | 0.5" |
| December | 15°F | 41°F | 27°F | 0.6" |
| Index | Ranchettes | Wyoming | National |
| Air quality index | 43 | 39 | 42 |
| Pollution index | 1,822,900 | 1,779,975 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 305 |
| Days with moderate air quality | 60 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| South Greeley, WY | 4,473 | 43 | 14.0% |
| Warren AFB, WY | 2,997 | 43 | 14.0% |
| Cheyenne, WY | 64,099 | 43 | 14.0% |
| Fox Farm-College, WY | 4,105 | 43 | 14.0% |
| Ranchettes, WY | 6,384 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Islamorada, Village of Islands, FL | 6,384 | 41 | 18.0% |
| Belpre, OH | 6,387 | 35 | 30.0% |
| West Yarmouth, MA | 6,388 | 36 | 28.0% |
| Horseheads, NY | 6,388 | 35 | 30.0% |
| Laurel Bay, SC | 6,388 | 29 | 42.0% |
| Ranchettes, WY | 6,384 | 43 | 14.0% |
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