| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 13°F | 39°F | 25°F | 0.6" |
| February | 16°F | 43°F | 29°F | 0.8" |
| March | 28°F | 58°F | 42°F | 1.3" |
| April | 39°F | 68°F | 53°F | 3.3" |
| May | 49°F | 78°F | 63°F | 5.7" |
| June | 61°F | 88°F | 74°F | 5.4" |
| July | 65°F | 92°F | 78°F | 3.1" |
| August | 62°F | 89°F | 75°F | 4.4" |
| September | 53°F | 83°F | 67°F | 4.6" |
| October | 40°F | 70°F | 54°F | 3.2" |
| November | 28°F | 57°F | 41°F | 1.0" |
| December | 16°F | 41°F | 27°F | 1.5" |
| Index | Palmyra | Nebraska | National |
| Air quality index | 31 | 86 | 42 |
| Pollution index | 604,932 | 590,627 | 2,726,193 |
| Measurement | Total |
| Days measured | 360 |
| Days with good air quality | 338 |
| Days with moderate air quality | 22 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Elmwood, NE | 701 | 31 | 38.0% |
| Burr, NE | 28 | 31 | 38.0% |
| Hickman, NE | 2,432 | 31 | 38.0% |
| Bennet, NE | 1,088 | 31 | 38.0% |
| Unadilla, NE | 374 | 31 | 38.0% |
| Palmyra, NE | 670 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Bauxite, AR | 670 | 45 | 10.0% |
| Smith River, CA | 670 | 20 | 60.0% |
| Cinco Bayou, FL | 670 | 31 | 38.0% |
| Lenox, GA | 670 | 35 | 30.0% |
| North High Shoals, GA | 670 | 44 | 12.0% |
| Palmyra, NE | 670 | 31 | 38.0% |
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