| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 48°F | 35°F | 1.4" |
| February | 28°F | 55°F | 40°F | 1.1" |
| March | 32°F | 62°F | 46°F | 0.6" |
| April | 37°F | 68°F | 51°F | 0.5" |
| May | 45°F | 76°F | 60°F | 0.6" |
| June | 53°F | 87°F | 70°F | 0.3" |
| July | 61°F | 96°F | 79°F | 0.3" |
| August | 58°F | 93°F | 76°F | 0.2" |
| September | 50°F | 86°F | 67°F | 0.1" |
| October | 40°F | 73°F | 55°F | 0.8" |
| November | 30°F | 60°F | 44°F | 0.6" |
| December | 23°F | 48°F | 35°F | 1.1" |
| Index | Washoe Valley | Nevada | National |
| Air quality index | 41 | 38 | 42 |
| Pollution index | 599,976 | 2,601,914 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 308 |
| Days with moderate air quality | 57 |
| 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 | 0.002% |
| Lead | 0.030% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Virginia City, NV | 681 | 41 | 18.0% |
| Glenbrook, NV | 295 | 41 | 18.0% |
| Carson City, NV | 57,373 | 41 | 18.0% |
| Indian Hills, NV | 6,324 | 41 | 18.0% |
| Incline Village, NV | 9,476 | 41 | 18.0% |
| Washoe Valley, NV | 2,799 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Madison, ME | 2,799 | 28 | 44.0% |
| Bedford, PA | 2,799 | 36 | 28.0% |
| Richmond, UT | 2,799 | 44 | 12.0% |
| Harlem, FL | 2,798 | 36 | 28.0% |
| Belville, NC | 2,798 | 34 | 32.0% |
| Washoe Valley, NV | 2,799 | 41 | 18.0% |