| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 46°F | 41°F | 6.0" |
| February | 38°F | 49°F | 43°F | 4.2" |
| March | 39°F | 53°F | 45°F | 5.8" |
| April | 42°F | 58°F | 49°F | 3.1" |
| May | 47°F | 66°F | 55°F | 2.4" |
| June | 51°F | 71°F | 59°F | 1.3" |
| July | 55°F | 77°F | 64°F | 0.6" |
| August | 55°F | 77°F | 65°F | 0.8" |
| September | 52°F | 71°F | 60°F | 1.5" |
| October | 47°F | 60°F | 52°F | 4.5" |
| November | 41°F | 51°F | 46°F | 6.8" |
| December | 36°F | 45°F | 40°F | 5.8" |
| Index | Home | Washington | National |
| Air quality index | 21 | 36 | 42 |
| Pollution index | 6,704,330 | 4,541,850 | 2,726,193 |
| Measurement | Total |
| Days measured | 361 |
| Days with good air quality | 339 |
| Days with moderate air quality | 22 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.100% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.030% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| Gig Harbor, WA | 10,280 | 18 | 64.0% |
| Vaughn, WA | 1,052 | 18 | 64.0% |
| Bethel, WA | 4,182 | 18 | 64.0% |
| Ruston, WA | 1,329 | 18 | 64.0% |
| Allyn, WA | 2,504 | 18 | 64.0% |
| Home, WA | 1,649 | 21 | 58.0% |
| City | Population | Air Quality Index | National Avg. |
| New Haven, WV | 1,649 | 25 | 50.0% |
| Glenboro-South Cypress, MB | 1,649 | n/a | |
| Nora Springs, IA | 1,648 | 15 | 70.0% |
| Cambridge City, IN | 1,648 | 28 | 44.0% |
| Monon, IN | 1,650 | 42 | 16.0% |
| Home, WA | 1,649 | 21 | 58.0% |
Here are the best places to live in Washington
See the best places to live in Home
Check out the 10 safest cities in Washington
These are the largest cities in Washington