| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 34°F | 26°F | 2.9" |
| February | 27°F | 47°F | 36°F | 2.2" |
| March | 35°F | 56°F | 44°F | 8.3" |
| April | 45°F | 65°F | 54°F | 4.8" |
| May | 51°F | 73°F | 61°F | 6.4" |
| June | 63°F | 87°F | 75°F | 4.8" |
| July | 67°F | 88°F | 77°F | 8.0" |
| August | 62°F | 84°F | 72°F | 5.8" |
| September | 58°F | 81°F | 69°F | 9.2" |
| October | 46°F | 69°F | 56°F | 8.5" |
| November | 35°F | 56°F | 45°F | 4.1" |
| December | 21°F | 36°F | 28°F | 2.6" |
| Index | Creston | Iowa | National |
| Air quality index | 39 | 39 | 42 |
| Pollution index | 338,773 | 1,154,535 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 306 |
| Days with moderate air quality | 59 |
| 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. |
| Arispe, IA | 103 | 39 | 22.0% |
| Prescott, IA | 189 | 39 | 22.0% |
| Lenox, IA | 1,446 | 39 | 22.0% |
| Afton, IA | 901 | 39 | 22.0% |
| Macksburg, IA | 97 | 39 | 22.0% |
| Creston, IA | 7,754 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Withamsville, OH | 7,754 | 54 | 8.0% |
| Winnemucca, NV | 7,752 | 14 | 72.0% |
| Floris, VA | 7,752 | 47 | 6.0% |
| Pomona, NJ | 7,756 | 37 | 26.0% |
| Senatobia, MS | 7,759 | 45 | 10.0% |
| Creston, IA | 7,754 | 39 | 22.0% |
Here are the best places to live in Iowa
Top 10 best public schools in Creston
Top 10 cities in Iowa with the best education system
10 Best cities in Iowa for employment