Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As Millville enters September, the average high-temperature subtly lowers from the 79.7°F (26.5°C) of August to a still warm 74.3°F (23.5°C). Millville experiences an average nighttime temperature of 68°F (20°C) in September, reflecting a minor difference from the day's peak.Humidity
The average relative humidity in September in Millville is 78%.Rainfall
In Millville, in September, it is raining for 12.9 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, there are 144.6 rainfall days, and 25.51" (648mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Millville.Daylight
In Millville, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:30 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:44 pm EDT.
Sunshine
The average sunshine in September in Millville is 9.3h.UV index
In Millville, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are the temperatures in Millville in September?
What is the average humidity in September in Millville?
How much does it rain in Millville in September?
When it does not snow in Millville?
What is the average length of the day in September in Millville?
When is the sunrise / sunset in September in Millville?
How long on average sun shines in September in Millville?
What is the UV index intensity in September in Millville?
Average temperature in September
Millville, DE
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in September: 68°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).
Average pressure in September
Millville, 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
Millville, DE
- Average wind speed in September: 10.6mph
The windiest month (with the highest average wind speed) is January (12.8mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in September
Millville, DE
- Average humidity in September: 78%
The month with the highest relative humidity is May (82%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in September
Millville, DE
- Average rainfall in September: 1.85"
The wettest months (with the highest rainfall) are July and August (2.87").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in September
Millville, DE
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in September
Millville, DE
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Millville, DE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Millville, DE
- Average daylight in September: 12h and 2min
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 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Millville, DE
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in September
Millville, 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
Millville, DE
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Millville, 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).
Millville, Delaware, USA
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