| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 45°F | 31°F | 2.3" |
| February | 23°F | 48°F | 33°F | 1.7" |
| March | 34°F | 61°F | 45°F | 3.3" |
| April | 43°F | 69°F | 54°F | 5.5" |
| May | 53°F | 78°F | 64°F | 9.9" |
| June | 64°F | 90°F | 76°F | 8.7" |
| July | 68°F | 94°F | 80°F | 7.6" |
| August | 66°F | 91°F | 77°F | 11.2" |
| September | 58°F | 84°F | 69°F | 5.7" |
| October | 45°F | 72°F | 56°F | 6.3" |
| November | 32°F | 58°F | 43°F | 3.4" |
| December | 21°F | 44°F | 31°F | 2.4" |
| Index | Seward | Kansas | National |
| Air quality index | 15 | 47 | 42 |
| Pollution index | 231,146 | 989,153 | 2,726,193 |
| Measurement | Total |
| Days measured | 304 |
| Days with good air quality | 301 |
| Days with moderate air quality | 3 |
| 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 | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Radium, KS | 7 | 15 | 70.0% |
| Great Bend, KS | 15,224 | 15 | 70.0% |
| Pawnee Rock, KS | 312 | 15 | 70.0% |
| St. John, KS | 1,377 | 15 | 70.0% |
| Ellinwood, KS | 2,044 | 40 | 20.0% |
| Seward, KS | 63 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Cale, AR | 63 | 32 | 36.0% |
| Padroni, CO | 63 | 19 | 62.0% |
| Seville, GA | 63 | 39 | 22.0% |
| Orchard, IA | 63 | 15 | 70.0% |
| Labette, KS | 63 | 38 | 24.0% |
| Seward, KS | 63 | 15 | 70.0% |
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