|
Typical Des Moines September Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 77.1 °F | |
| Average daily low | 55.8 °F | |
| Average monthly precipitation | 3.2 inches | |
| Average monthly snow | none | |
| Daily chance of precipitation | 27.3% | |
| Daily chance of snow | 0% | |
|
Des Moines September Weather Records 1893–2024 |
||
|---|---|---|
| Highest temperature | 103 °F | September 3, 1939 |
| Lowest temperature | 23 °F | September 28, 1942 |
| Highest daily low | 78 °F | September 6, 1936 |
| Lowest daily high | 42 °F | September 26, 1942 |
| Hottest average high temperature | 87.7 °F | 1897 |
| Coldest average high temperature | 69.1 °F | 1993 |
| Most daily precipitation | 6.8 inches | September 2, 1909 |
| Most monthly precipitation | 12.2 inches | 1941 |
| Most daily snow | none | - |
| Most monthly snow | none | - |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| September 1 | 81.7 | 61.5 | 98 | 38 |
| September 2 | 81.5 | 61.2 | 98 | 43 |
| September 3 | 81.4 | 61.0 | 103 | 40 |
| September 4 | 81.2 | 60.7 | 100 | 42 |
| September 5 | 80.9 | 60.4 | 99 | 43 |
| September 6 | 80.6 | 60.1 | 101 | 42 |
| September 7 | 80.2 | 59.7 | 102 | 41 |
| September 8 | 79.8 | 59.2 | 100 | 40 |
| September 9 | 79.4 | 58.8 | 101 | 42 |
| September 10 | 79.0 | 58.4 | 101 | 40 |
| September 11 | 78.6 | 57.9 | 100 | 37 |
| September 12 | 78.2 | 57.4 | 98 | 35 |
| September 13 | 77.9 | 57.0 | 98 | 39 |
| September 14 | 77.4 | 56.5 | 99 | 34 |
| September 15 | 77.1 | 56.0 | 99 | 36 |
| September 16 | 76.9 | 55.6 | 96 | 36 |
| September 17 | 76.5 | 55.2 | 95 | 33 |
| September 18 | 76.1 | 54.8 | 94 | 32 |
| September 19 | 75.6 | 54.5 | 96 | 33 |
| September 20 | 75.1 | 54.0 | 94 | 32 |
| September 21 | 74.7 | 53.5 | 96 | 32 |
| September 22 | 74.3 | 53.1 | 99 | 30 |
| September 23 | 74.0 | 52.8 | 92 | 32 |
| September 24 | 73.7 | 52.4 | 92 | 30 |
| September 25 | 73.4 | 52.0 | 89 | 31 |
| September 26 | 72.9 | 51.5 | 92 | 28 |
| September 27 | 72.5 | 51.1 | 91 | 29 |
| September 28 | 72.1 | 50.7 | 99 | 23 |
| September 29 | 71.7 | 50.3 | 91 | 23 |
| September 30 | 71.2 | 49.8 | 92 | 28 |