| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 44°F | 30°F | 1.5" |
| February | 21°F | 47°F | 33°F | 2.9" |
| March | 32°F | 61°F | 45°F | 2.9" |
| April | 41°F | 69°F | 53°F | 3.7" |
| May | 51°F | 78°F | 63°F | 7.7" |
| June | 63°F | 90°F | 76°F | 5.8" |
| July | 67°F | 94°F | 80°F | 8.4" |
| August | 65°F | 91°F | 77°F | 6.1" |
| September | 57°F | 83°F | 68°F | 4.1" |
| October | 43°F | 71°F | 55°F | 5.4" |
| November | 31°F | 58°F | 42°F | 3.8" |
| December | 20°F | 43°F | 30°F | 3.5" |
| Index | Catharine | Kansas | National |
| Air quality index | 15 | 47 | 42 |
| Pollution index | 214,073 | 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 | 0.004% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Gorham, KS | 483 | 15 | 70.0% |
| Hays, KS | 20,855 | 15 | 70.0% |
| Munjor, KS | 76 | 15 | 70.0% |
| Victoria, KS | 1,077 | 15 | 70.0% |
| Schoenchen, KS | 196 | 15 | 70.0% |
| Catharine, KS | 123 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Cold Bay, AK | 123 | 31 | 38.0% |
| Blue Mountain, AR | 123 | 36 | 28.0% |
| Nicasio, CA | 123 | 40 | 20.0% |
| Vincent, IA | 123 | 37 | 26.0% |
| Princeton, ID | 123 | 10 | 80.0% |
| Catharine, KS | 123 | 15 | 70.0% |
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