| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 46°F | 28°F | 0.2" |
| February | 18°F | 50°F | 33°F | 0.2" |
| March | 27°F | 65°F | 45°F | 0.4" |
| April | 36°F | 72°F | 53°F | 1.0" |
| May | 45°F | 81°F | 62°F | 1.7" |
| June | 57°F | 94°F | 75°F | 1.7" |
| July | 63°F | 96°F | 79°F | 2.7" |
| August | 60°F | 93°F | 76°F | 2.4" |
| September | 51°F | 87°F | 68°F | 1.2" |
| October | 37°F | 73°F | 53°F | 0.6" |
| November | 25°F | 61°F | 41°F | 0.2" |
| December | 14°F | 46°F | 28°F | 0.3" |
| Index | Brandon | Colorado | National |
| Air quality index | 20 | 38 | 42 |
| Pollution index | 265,058 | 2,068,342 | 2,726,193 |
| Measurement | Total |
| Days measured | 126 |
| Days with good air quality | 125 |
| Days with moderate air quality | 1 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Sheridan Lake, CO | 70 | 20 | 60.0% |
| Brandon, CO | 3 | 20 | 60.0% |
| 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% |
| Bonanza, CO | 3 | 16 | 68.0% |
| The Ranch, MN | 3 | 33 | 34.0% |
| Brandon, CO | 3 | 20 | 60.0% |
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