| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 56°F | 46°F | 6.8" |
| February | 40°F | 57°F | 47°F | 6.2" |
| March | 41°F | 57°F | 48°F | 8.0" |
| April | 42°F | 58°F | 49°F | 4.5" |
| May | 45°F | 60°F | 52°F | 1.8" |
| June | 48°F | 62°F | 55°F | 1.4" |
| July | 51°F | 63°F | 56°F | 0.3" |
| August | 51°F | 64°F | 56°F | 0.2" |
| September | 48°F | 65°F | 55°F | 1.1" |
| October | 46°F | 64°F | 53°F | 3.8" |
| November | 43°F | 59°F | 50°F | 6.1" |
| December | 39°F | 55°F | 46°F | 8.8" |
| Index | Hoopa | California | National |
| Air quality index | 27 | 55 | 42 |
| Pollution index | 5,642,310 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 353 |
| Days with moderate air quality | 10 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.060% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.050% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Willow Creek, CA | 1,241 | 27 | 46.0% |
| Trinity Village, CA | 248 | 27 | 46.0% |
| Hoopa, CA | 3,348 | 27 | 46.0% |
| City | Population | Air Quality Index | National Avg. |
| Flagler Estates, FL | 3,348 | 17 | 66.0% |
| Jefferson, OR | 3,348 | 28 | 44.0% |
| Grande-Rivière, QC | 3,348 | n/a | |
| Perry, NY | 3,347 | 37 | 26.0% |
| Sharpsburg, PA | 3,347 | 56 | 12.0% |
| Hoopa, CA | 3,348 | 27 | 46.0% |
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