| 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 | Dwight | Nebraska | National |
| Air quality index | 31 | 86 | 42 |
| Pollution index | 206,104 | 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 | 0.003% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Seward, NE | 7,210 | 31 | 38.0% |
| Brainard, NE | 421 | 31 | 38.0% |
| Weston, NE | 361 | 31 | 38.0% |
| Garland, NE | 321 | 31 | 38.0% |
| Tamora, NE | 19 | 31 | 38.0% |
| Dwight, NE | 220 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Coffman Cove, AK | 220 | 20 | 60.0% |
| Elim, AK | 220 | 38 | 24.0% |
| Elbert, CO | 220 | 45 | 10.0% |
| Waiohinu, HI | 220 | 16 | 68.0% |
| Drakesville, IA | 220 | 29 | 42.0% |
| Dwight, NE | 220 | 31 | 38.0% |
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