Daytime highs, nighttime lows and the warmest cities in Delaware, the United States of America this September.
Delaware, the United States of America, a region in the United States of America, typically experiences warm weather in September, with maximum daytime temperatures around 26°C (79°F) and nighttime temperatures around 16°C (61°F) in Dover.
To get a sense of September's typical temperatures in the key spots of Delaware, explore the map below. Click on a point for an in-depth look.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Delaware.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Daytime temperatures in Dover typically peak at 26°C (79°F) in September, putting it in the high range.
Nighttime temperatures in Dover typically drop to around 16°C (61°F) in September.
We have much more information about the climate in Delaware.
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