| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 35°F | 26°F | 1.3" |
| February | 25°F | 44°F | 33°F | 2.5" |
| March | 31°F | 56°F | 42°F | 2.5" |
| April | 35°F | 62°F | 46°F | 3.3" |
| May | 43°F | 72°F | 56°F | 2.9" |
| June | 48°F | 80°F | 63°F | 1.7" |
| July | 60°F | 92°F | 75°F | 0.7" |
| August | 55°F | 88°F | 71°F | 0.4" |
| September | 46°F | 76°F | 60°F | 0.7" |
| October | 38°F | 63°F | 49°F | 2.5" |
| November | 27°F | 48°F | 36°F | 1.2" |
| December | 20°F | 32°F | 26°F | 3.1" |
| Index | Jerome | Idaho | National |
| Air quality index | 20 | 32 | 42 |
| Pollution index | 1,569,880 | 2,063,710 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 361 |
| Days with moderate air quality | 4 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Hansen, ID | 1,327 | 20 | 60.0% |
| Dietrich, ID | 359 | 20 | 60.0% |
| Kimberly, ID | 3,977 | 20 | 60.0% |
| Buhl, ID | 4,462 | 20 | 60.0% |
| Twin Falls, ID | 49,819 | 20 | 60.0% |
| Jerome, ID | 11,824 | 20 | 60.0% |
| City | Population | Air Quality Index | National Avg. |
| South Lyon, MI | 11,818 | 40 | 20.0% |
| Manchester, VA | 11,814 | 44 | 12.0% |
| Dunkirk, NY | 11,812 | 37 | 26.0% |
| Delhi, CA | 11,837 | 48 | 4.0% |
| Bucyrus, OH | 11,808 | 41 | 18.0% |
| Jerome, ID | 11,824 | 20 | 60.0% |
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