| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 39°F | 27°F | 0.6" |
| February | 20°F | 43°F | 30°F | 0.9" |
| March | 33°F | 58°F | 44°F | 2.0" |
| April | 43°F | 68°F | 54°F | 4.3" |
| May | 53°F | 77°F | 64°F | 4.6" |
| June | 64°F | 86°F | 75°F | 6.0" |
| July | 67°F | 89°F | 78°F | 4.0" |
| August | 64°F | 87°F | 75°F | 4.7" |
| September | 56°F | 81°F | 67°F | 3.5" |
| October | 44°F | 69°F | 55°F | 3.1" |
| November | 32°F | 56°F | 43°F | 1.5" |
| December | 21°F | 40°F | 30°F | 1.9" |
| Index | Preston | Nebraska | National |
| Air quality index | 43 | 86 | 42 |
| Pollution index | 382,585 | 590,627 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 283 |
| Days with moderate air quality | 82 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Craig, MO | 137 | 43 | 14.0% |
| Falls City, NE | 4,139 | 43 | 14.0% |
| Stella, NE | 141 | 43 | 14.0% |
| White Cloud, KS | 154 | 43 | 14.0% |
| Hamlin, KS | 85 | 43 | 14.0% |
| Preston, NE | 30 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Alatna, AK | 30 | 38 | 24.0% |
| Skwentna, AK | 30 | 31 | 38.0% |
| Fourche, AR | 30 | 45 | 10.0% |
| Hidden Lake, CO | 30 | 47 | 6.0% |
| Gibson, IA | 30 | 35 | 30.0% |
| Preston, NE | 30 | 43 | 14.0% |
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