Delaware September Weather
Delaware weather averages and all-time records in the month of September from 1991–2020 based on data made available by the NOAA.
State:
Month:
| Statewide September Averages |
| High temperature |
79.0 °F |
| Low temperature |
59.1 °F |
| Precipitation |
4.2 inches |
More
Delaware Cities
September weather averages for various places in Delaware, from 1991–2020.
| Average (°F) |
Record (°F) |
Monthly (inches) |
| Dover |
79.5 |
61.2 |
99 |
30 |
4.1 |
| Georgetown |
79.8 |
60.8 |
97 |
41 |
4.4 |
| Lewes |
79.0 |
63.3 |
98 |
37 |
4.6 |
| Wilmington |
78.3 |
59.2 |
100 |
32 |
4.4 |