| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | -4°F | 24°F | 8°F | 1.5" |
| February | 3°F | 31°F | 16°F | 1.2" |
| March | 17°F | 45°F | 29°F | 5.8" |
| April | 25°F | 56°F | 40°F | 1.3" |
| May | 33°F | 65°F | 49°F | 1.8" |
| June | 40°F | 78°F | 60°F | 2.3" |
| July | 48°F | 81°F | 64°F | 3.8" |
| August | 45°F | 78°F | 61°F | 4.2" |
| September | 37°F | 72°F | 53°F | 2.4" |
| October | 26°F | 60°F | 42°F | 1.9" |
| November | 15°F | 47°F | 29°F | 0.9" |
| December | 4°F | 30°F | 16°F | 1.6" |
| Index | Bonanza | Colorado | National |
| Air quality index | 16 | 38 | 42 |
| Pollution index | 9,526,460 | 2,068,342 | 2,726,193 |
| Measurement | Total |
| Days measured | 62 |
| Days with good air quality | 60 |
| Days with moderate air quality | 2 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.090% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.150% |
| Mercury | 0.160% |
| City | Population | Air Quality Index | National Avg. |
| Saguache, CO | 464 | 16 | 68.0% |
| Bonanza, CO | 3 | 16 | 68.0% |
| City | Population | Air Quality Index | National Avg. |
| Portage Creek, AK | 3 | 31 | 38.0% |
| Gilbert, AR | 3 | 36 | 28.0% |
| Poso Park, CA | 3 | 67 | 34.0% |
| Brandon, CO | 3 | 20 | 60.0% |
| The Ranch, MN | 3 | 33 | 34.0% |
| Bonanza, CO | 3 | 16 | 68.0% |
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