| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 49°F | 32°F | 0.8" |
| February | 21°F | 52°F | 35°F | 0.6" |
| March | 31°F | 65°F | 46°F | 1.2" |
| April | 39°F | 72°F | 54°F | 2.7" |
| May | 49°F | 80°F | 64°F | 3.1" |
| June | 61°F | 92°F | 76°F | 3.6" |
| July | 66°F | 96°F | 80°F | 3.2" |
| August | 64°F | 93°F | 77°F | 3.1" |
| September | 55°F | 87°F | 70°F | 1.4" |
| October | 43°F | 75°F | 57°F | 2.3" |
| November | 30°F | 62°F | 44°F | 0.8" |
| December | 20°F | 47°F | 32°F | 1.3" |
| Index | Spearville | Kansas | National |
| Air quality index | 15 | 47 | 42 |
| Pollution index | 101,056 | 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. |
| Offerle, KS | 290 | 15 | 70.0% |
| Wright, KS | 115 | 15 | 70.0% |
| Dodge City, KS | 27,186 | 15 | 70.0% |
| Ford, KS | 214 | 15 | 70.0% |
| Fort Dodge, KS | 179 | 15 | 70.0% |
| Spearville, KS | 970 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Klamath, CA | 970 | 20 | 60.0% |
| Oaktown, IN | 970 | 36 | 28.0% |
| Northfield, MA | 970 | 34 | 32.0% |
| Lakes of the North, MI | 970 | 36 | 28.0% |
| Copan, OK | 970 | 45 | 10.0% |
| Spearville, KS | 970 | 15 | 70.0% |
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