September weather forecastMillsboro, DE
September
Weather in September
As summer fades into fall, September in Millsboro showcases a notable decrease in temperature. The rainfall drops to 1.73" (44mm), indicating the beginning of a drier period. The daylight hours are reduced to 12.4 hours, indicating the onset of shorter days. On the other hand, sunshine persists with 9.4 hours per day, leaving plenty of room for city exploration. Along with the breeze blowing at 8.8mph (14.2km/h), September ushers in the welcoming change of fall.Temperature
In Millsboro, September's average high-temperature stands at a still moderately hot 75.9°F (24.4°C), closely related to the preceding month. Throughout the month of September, Millsboro observes an average nighttime temperature of 65.7°F (18.7°C).Humidity
In Millsboro, the average relative humidity in September is 79%.Rainfall
In Millsboro, in September, it is raining for 13.5 days, with typically 1.73" (44mm) of accumulated precipitation. In Millsboro, during the entire year, the rain falls for 146.8 days and collects up to 25.2" (640mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Millsboro, the average length of the day in September is 12h and 26min.On the first day of September in Millsboro, sunrise is at 6:31 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:45 pm EDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Millsboro, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Exercise prevention - Warding off sunburn is urged. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Millsboro, DE
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Millsboro, DE
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Millsboro, DE
- Average wind speed in September: 8.8mph
The windiest months (with the highest average wind speed) are January, February and March (11.1mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in September
Millsboro, DE
- Average humidity in September: 79%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in September
Millsboro, DE
- Average rainfall in September: 1.73"
The wettest months (with the highest rainfall) are July and August (2.95").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in September
Millsboro, DE
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in September
Millsboro, DE
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Millsboro, DE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Millsboro, DE
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Millsboro, DE
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in September
Millsboro, DE
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Millsboro, DE
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Millsboro, DE
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
