| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 35°F | 24°F | 1.4" |
| February | 18°F | 37°F | 26°F | 1.3" |
| March | 32°F | 55°F | 42°F | 2.0" |
| April | 42°F | 65°F | 52°F | 5.1" |
| May | 54°F | 76°F | 64°F | 6.3" |
| June | 64°F | 84°F | 73°F | 6.7" |
| July | 67°F | 88°F | 77°F | 4.2" |
| August | 65°F | 86°F | 75°F | 6.6" |
| September | 55°F | 78°F | 66°F | 5.9" |
| October | 44°F | 67°F | 54°F | 5.2" |
| November | 32°F | 53°F | 41°F | 3.9" |
| December | 21°F | 38°F | 28°F | 2.1" |
| Index | Elmwood | Nebraska | National |
| Air quality index | 31 | 86 | 42 |
| Pollution index | 2,170,910 | 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 | 0.000% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Alvo, NE | 124 | 31 | 38.0% |
| Otoe, NE | 315 | 31 | 38.0% |
| Walton, NE | 407 | 31 | 38.0% |
| Ashland, NE | 2,834 | 31 | 38.0% |
| Avoca, NE | 225 | 31 | 38.0% |
| Elmwood, NE | 701 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Greensboro, FL | 701 | 40 | 20.0% |
| Molena, GA | 701 | 42 | 16.0% |
| Elsah, IL | 701 | 54 | 8.0% |
| Wheatfield, IN | 701 | 37 | 26.0% |
| Evarts, KY | 701 | 39 | 22.0% |
| Elmwood, NE | 701 | 31 | 38.0% |
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