| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 11°F | 28°F | 19°F | 1.2" |
| February | 15°F | 34°F | 24°F | 0.7" |
| March | 25°F | 47°F | 35°F | 1.1" |
| April | 31°F | 58°F | 43°F | 1.6" |
| May | 38°F | 68°F | 52°F | 1.6" |
| June | 46°F | 78°F | 61°F | 1.3" |
| July | 51°F | 88°F | 69°F | 0.5" |
| August | 49°F | 86°F | 67°F | 0.8" |
| September | 42°F | 76°F | 57°F | 1.2" |
| October | 33°F | 59°F | 45°F | 1.5" |
| November | 24°F | 44°F | 33°F | 0.9" |
| December | 13°F | 30°F | 21°F | 1.3" |
| Index | Menan | Idaho | National |
| Air quality index | 27 | 32 | 42 |
| Pollution index | 1,965,480 | 2,063,710 | 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 | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.020% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Lewisville, ID | 476 | 27 | 46.0% |
| Roberts, ID | 570 | 27 | 46.0% |
| Lincoln, ID | 3,380 | 27 | 46.0% |
| Ucon, ID | 1,430 | 27 | 46.0% |
| Hamer, ID | 45 | 27 | 46.0% |
| Menan, ID | 894 | 27 | 46.0% |
| City | Population | Air Quality Index | National Avg. |
| Jolivue, VA | 894 | 36 | 28.0% |
| Candle Lake, SK | 894 | n/a | |
| Lansing, IA | 893 | 35 | 30.0% |
| Long Grove, IA | 893 | 46 | 8.0% |
| Buffalo, IN | 895 | 42 | 16.0% |
| Menan, ID | 894 | 27 | 46.0% |
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