| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 39°F | 32°F | 2.0" |
| February | 30°F | 46°F | 37°F | 2.1" |
| March | 33°F | 54°F | 42°F | 2.0" |
| April | 36°F | 61°F | 47°F | 2.2" |
| May | 42°F | 69°F | 55°F | 4.0" |
| June | 48°F | 77°F | 62°F | 3.8" |
| July | 53°F | 89°F | 71°F | 2.6" |
| August | 50°F | 88°F | 69°F | 2.2" |
| September | 43°F | 79°F | 60°F | 2.0" |
| October | 37°F | 64°F | 49°F | 2.4" |
| November | 32°F | 49°F | 40°F | 1.9" |
| December | 25°F | 38°F | 31°F | 2.2" |
| Index | Joseph | Oregon | National |
| Air quality index | 20 | 32 | 42 |
| Pollution index | 1,082,340 | 7,156,356 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 344 |
| Days with moderate air quality | 21 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Enterprise, OR | 2,181 | 20 | 60.0% |
| Lostine, OR | 327 | 20 | 60.0% |
| Wallowa Lake, OR | 52 | 20 | 60.0% |
| Joseph, OR | 1,092 | 20 | 60.0% |
| City | Population | Air Quality Index | National Avg. |
| Gun Club Estates, FL | 1,092 | 36 | 28.0% |
| Mendon, IL | 1,092 | 41 | 18.0% |
| Jamestown, IN | 1,092 | 54 | 8.0% |
| Silver City, NC | 1,092 | 41 | 18.0% |
| Poquott, NY | 1,092 | 43 | 14.0% |
| Joseph, OR | 1,092 | 20 | 60.0% |
Here are the best places to live in Oregon
Safest States In The US
See the best places to live in Joseph
Check out the 10 most dangerous cities in Oregon