| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 35°F | 25°F | 0.1" |
| February | 19°F | 39°F | 27°F | 0.0" |
| March | 30°F | 55°F | 41°F | 0.6" |
| April | 40°F | 65°F | 51°F | 1.9" |
| May | 51°F | 75°F | 62°F | 4.7" |
| June | 62°F | 85°F | 73°F | 2.6" |
| July | 65°F | 87°F | 76°F | 2.0" |
| August | 63°F | 84°F | 73°F | 3.0" |
| September | 54°F | 79°F | 65°F | 2.1" |
| October | 42°F | 66°F | 52°F | 1.4" |
| November | 29°F | 53°F | 39°F | 0.7" |
| December | 18°F | 37°F | 26°F | 0.5" |
| Index | Thayer | Nebraska | National |
| Air quality index | 31 | 86 | 42 |
| Pollution index | 574,580 | 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 | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Osceola, NE | 826 | 19 | 62.0% |
| York, NE | 7,810 | 19 | 62.0% |
| Polk, NE | 319 | 19 | 62.0% |
| Benedict, NE | 282 | 19 | 62.0% |
| Stromsburg, NE | 1,028 | 19 | 62.0% |
| Thayer, NE | 30 | 31 | 38.0% |
| 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% |
| Thayer, NE | 30 | 31 | 38.0% |
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