| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 36°F | 29°F | 1.8" |
| February | 27°F | 45°F | 35°F | 2.1" |
| March | 33°F | 55°F | 43°F | 2.4" |
| April | 36°F | 61°F | 48°F | 1.5" |
| May | 44°F | 72°F | 57°F | 3.7" |
| June | 50°F | 77°F | 62°F | 2.0" |
| July | 57°F | 91°F | 74°F | 3.7" |
| August | 53°F | 87°F | 69°F | 2.6" |
| September | 45°F | 75°F | 59°F | 2.5" |
| October | 39°F | 60°F | 48°F | 1.6" |
| November | 30°F | 44°F | 37°F | 2.4" |
| December | 23°F | 35°F | 29°F | 3.9" |
| Index | Liberty Lake | Washington | National |
| Air quality index | 43 | 36 | 50 |
| Pollution index | 408,717 | 8,596,989 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 252 |
| Days with moderate air quality | 111 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Rockford Bay, ID | 272 | 43 | 14% |
| Huetter, ID | 94 | 43 | 14% |
| Country Homes, WA | 5,745 | 43 | 14% |
| Otis Orchards-East Farms, WA | 6,399 | 43 | 14% |
| Coeur d'Alene, ID | 47,842 | 43 | 14% |
| Liberty Lake, WA | 8,566 | 43 | 14% |
| City, State | Population | Air Quality Index | National Avg. |
| Greenbriar, VA | 8,568 | 47 | 6% |
| Southside, AL | 8,563 | 43 | 14% |
| Picture Rocks, AZ | 8,562 | 47 | 6% |
| Congers, NY | 8,562 | 51 | 2% |
| Farmville, VA | 8,562 | 26 | 48% |
| Liberty Lake, WA | 8,566 | 43 | 14% |
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