| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 9°F | 24°F | 16°F | 0.8" |
| February | 11°F | 28°F | 18°F | 1.4" |
| March | 26°F | 44°F | 33°F | 2.1" |
| April | 37°F | 58°F | 46°F | 3.5" |
| May | 48°F | 70°F | 58°F | 5.7" |
| June | 58°F | 79°F | 68°F | 5.6" |
| July | 62°F | 83°F | 72°F | 5.9" |
| August | 59°F | 79°F | 69°F | 6.5" |
| September | 52°F | 74°F | 61°F | 4.8" |
| October | 39°F | 60°F | 48°F | 7.9" |
| November | 26°F | 45°F | 34°F | 2.6" |
| December | 12°F | 27°F | 19°F | 0.7" |
| Index | Sibley | Iowa | National |
| Air quality index | 36 | 39 | 50 |
| Pollution index | 627,200 | 1,643,836 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 321 |
| Days with moderate air quality | 43 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Ocheyedan, IA | 508 | 36 | 28% |
| Melvin, IA | 235 | 36 | 28% |
| Ashton, IA | 427 | 36 | 28% |
| Round Lake, MN | 444 | 36 | 28% |
| George, IA | 1,007 | 36 | 28% |
| Sibley, IA | 2,667 | 36 | 28% |
| City, State | Population | Air Quality Index | National Avg. |
| Canadian Lakes, MI | 2,667 | 38 | 24% |
| Munsons Corners, NY | 2,667 | 34 | 32% |
| Tusculum, TN | 2,668 | 45 | 10% |
| Van, TX | 2,666 | 36 | 28% |
| Cathcart, WA | 2,665 | 45 | 10% |
| Sibley, IA | 2,667 | 36 | 28% |
Here are the best places to live in Iowa
See the best places to live in & around Sibley
10 best cities to buy a new house in Iowa
Top 10 best public schools in Sibley