Dover
Delaware, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Dover, DE

The public Archives building in Dover, Delaware, between two large trees
The public Archives building in Dover, Delaware, between two large trees
  • Average high temperature in September: 81°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in September: 57°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (25°F).

  • Average rainfall in September: 4"

The wettest month (with the highest rainfall) is August (4.3").
The driest month (with the lowest rainfall) is February (3").

  • Average rainfall days in September: 8 days

The month with the highest number of rainy days is July (11 days).
The month with the lowest number of rainy days is October (7 days).

  • Average daylight in September: 13.3h

The month with the longest days is June (Average daylight: 16h).
The month with shortest days is December (Average daylight: 10.5h).

  • Average sunshine in September: 8h

Months with most sunshine are June and July (Average sunshine: 9h).
Months with least sunshine are January and December (Average sunshine: 5).

  • Average UV index in September: 7

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).

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