| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 11°F | 29°F | 20°F | 0.8" |
| February | 16°F | 35°F | 25°F | 0.4" |
| March | 26°F | 49°F | 37°F | 0.9" |
| April | 31°F | 60°F | 45°F | 1.1" |
| May | 38°F | 69°F | 54°F | 1.3" |
| June | 45°F | 80°F | 62°F | 0.9" |
| July | 50°F | 90°F | 70°F | 0.4" |
| August | 48°F | 88°F | 68°F | 0.6" |
| September | 41°F | 77°F | 59°F | 1.2" |
| October | 32°F | 61°F | 46°F | 1.3" |
| November | 24°F | 46°F | 34°F | 0.7" |
| December | 13°F | 31°F | 22°F | 0.8" |
| Index | Lewisville | 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. |
| Ammon, ID | 16,403 | 27 | 46.0% |
| Menan, ID | 894 | 27 | 46.0% |
| Roberts, ID | 570 | 27 | 46.0% |
| Idaho Falls, ID | 62,417 | 27 | 46.0% |
| Iona, ID | 2,608 | 27 | 46.0% |
| Lewisville, ID | 476 | 27 | 46.0% |
| City | Population | Air Quality Index | National Avg. |
| Churdan, IA | 476 | 37 | 26.0% |
| Richfield, ID | 476 | 20 | 60.0% |
| Naytahwaush, MN | 476 | 33 | 34.0% |
| Cameron, NC | 476 | 29 | 42.0% |
| Skillman, NJ | 476 | 41 | 18.0% |
| Lewisville, ID | 476 | 27 | 46.0% |
Here are the best places to live in Idaho
These are the 10 cheapest cities in Idaho
Check out the 10 safest cities in Idaho
See the best places to live in Lewisville