| 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 | 42 |
| Pollution index | 408,717 | 4,541,850 | 2,726,193 |
| 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 | Population | Air Quality Index | National Avg. |
| Rockford Bay, ID | 355 | 43 | 14.0% |
| Huetter, ID | 189 | 43 | 14.0% |
| Country Homes, WA | 5,877 | 43 | 14.0% |
| Otis Orchards-East Farms, WA | 5,968 | 43 | 14.0% |
| Coeur d'Alene, ID | 51,491 | 43 | 14.0% |
| Liberty Lake, WA | 10,381 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Vidalia, GA | 10,380 | 26 | 48.0% |
| Danville, IN | 10,380 | 54 | 8.0% |
| Beverly Hills, MI | 10,378 | 56 | 12.0% |
| Richmond Heights, OH | 10,376 | 50 | = 100 |
| Palatka, FL | 10,388 | 17 | 66.0% |
| Liberty Lake, WA | 10,381 | 43 | 14.0% |
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