| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 45°F | 33°F | 0.9" |
| February | 24°F | 50°F | 35°F | 0.4" |
| March | 25°F | 55°F | 39°F | 0.6" |
| April | 29°F | 60°F | 44°F | 1.0" |
| May | 37°F | 69°F | 53°F | 0.9" |
| June | 41°F | 76°F | 59°F | 0.9" |
| July | 47°F | 90°F | 70°F | 0.1" |
| August | 45°F | 87°F | 67°F | 0.9" |
| September | 37°F | 79°F | 58°F | 0.3" |
| October | 32°F | 64°F | 46°F | 0.9" |
| November | 28°F | 52°F | 39°F | 0.9" |
| December | 19°F | 41°F | 30°F | 0.9" |
| Index | Three Rivers | Oregon | National |
| Air quality index | 20 | 32 | 42 |
| Pollution index | 77,038 | 7,156,356 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 341 |
| Days with moderate air quality | 19 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Deschutes River Woods, OR | 6,305 | 20 | 60.0% |
| Sunriver, OR | 1,183 | 20 | 60.0% |
| La Pine, OR | 2,975 | 20 | 60.0% |
| Pronghorn, OR | 83 | 20 | 60.0% |
| Seventh Mountain, OR | 332 | 20 | 60.0% |
| Three Rivers, OR | 3,368 | 20 | 60.0% |
| City | Population | Air Quality Index | National Avg. |
| Arbuckle, CA | 3,368 | 44 | 12.0% |
| Winter Beach, FL | 3,368 | 36 | 28.0% |
| Woodlawn, OH | 3,367 | 54 | 8.0% |
| Walton Park, NY | 3,369 | 36 | 28.0% |
| Littleton Common, MA | 3,370 | 40 | 20.0% |
| Three Rivers, OR | 3,368 | 20 | 60.0% |
Here are the best places to live in Oregon
These are the largest cities in Oregon
Most Dangerous States In The US
See the best places to live in Three Rivers