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
September
Weather in September
Temperature
September's onset in Slaughter Beach, Delaware, corresponds with a subtle shift in the average high-temperature, slightly moving from a moderately hot 81.5°F (27.5°C) in August to a still warm 76.1°F (24.5°C). In Slaughter Beach, an average low-temperature of 64°F (17.8°C) is recorded during September nights.Humidity
In Slaughter Beach, Delaware, the average relative humidity in September is 79%.Rainfall
In Slaughter Beach, in September, during 13.5 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, in Slaughter Beach, there are 152.4 rainfall days, and 25.94" (659mm) of precipitation is accumulated.Snowfall
In Slaughter Beach, snow does not fall in April, June through October.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September in Slaughter Beach, sunrise is at 6:30 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:45 pm EDT.
Sunshine
In Slaughter Beach, the average sunshine in September is 9.4h.UV index
In Slaughter Beach, Delaware, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Slaughter Beach in September?
What is the average humidity in September in Slaughter Beach?
How many days does it rain in September in Slaughter Beach?
When it does not snow in Slaughter Beach?
How many hours of daylight does Slaughter Beach have in September?
When is the sunrise / sunset in September in Slaughter Beach?
How long on average sun shines in September in Slaughter Beach?
How high is the UV index in September in Slaughter Beach?
Average temperature in September
Slaughter Beach, DE
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Slaughter Beach, 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
Slaughter Beach, DE
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is February (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Slaughter Beach, DE
- Average humidity in September: 79%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in September
Slaughter Beach, DE
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is August (3.07").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in September
Slaughter Beach, DE
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in September
Slaughter Beach, DE
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.22").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in September
Slaughter Beach, DE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Slaughter Beach, DE
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Slaughter Beach, DE
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in September
Slaughter Beach, 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
Slaughter Beach, DE
- Average cloud cover in September: 32
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Slaughter Beach, 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).