| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 36°F | 27°F | 1.5" |
| February | 26°F | 44°F | 34°F | 1.3" |
| March | 32°F | 56°F | 43°F | 2.0" |
| April | 35°F | 62°F | 47°F | 3.9" |
| May | 44°F | 72°F | 57°F | 5.5" |
| June | 49°F | 80°F | 63°F | 1.4" |
| July | 60°F | 94°F | 77°F | 1.0" |
| August | 57°F | 90°F | 73°F | 1.2" |
| September | 46°F | 78°F | 61°F | 1.6" |
| October | 38°F | 64°F | 49°F | 2.8" |
| November | 27°F | 51°F | 38°F | 1.2" |
| December | 20°F | 37°F | 28°F | 3.0" |
| Index | Murtaugh | 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% |
| Hazelton, ID | 899 | 20 | 60.0% |
| Kimberly, ID | 3,977 | 20 | 60.0% |
| Eden, ID | 374 | 20 | 60.0% |
| Murtaugh, ID | 97 | 20 | 60.0% |
| City | Population | Air Quality Index | National Avg. |
| Ben Lomond, AR | 97 | 39 | 22.0% |
| Anegam, AZ | 97 | 47 | 6.0% |
| Rail Road Flat, CA | 97 | 39 | 22.0% |
| Three Rocks, CA | 97 | 50 | = 100 |
| Tuttle, CA | 97 | 48 | 4.0% |
| Murtaugh, ID | 97 | 20 | 60.0% |
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