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
The arrival of September correlates with a minor temperature reduction, down from August's moderately hot 82.2°F (27.9°C) to a still warm 76.5°F (24.7°C). During September, Harrington's temperature falls to a steady low-temperature average of 63.1°F (17.3°C).Humidity
The months with the highest humidity are May, August and September, with an average relative humidity of 79%.Rainfall
In Harrington, in September, during 13.6 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, there are 167.5 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
In Harrington, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:32 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:46 pm EDT.
Sunshine
In September, the average sunshine in Harrington is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 5 suggests these recommendations:
Heed the precautions - It is counselled to guard against solar damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Harrington in September?
What is the most humid month?
What is the average humidity in September?
How much does it rain in Harrington in September?
When it does not snow?
How many hours of daylight does Harrington have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Harrington have in September?
How high is the UV index in September?
Average temperature in September
Harrington, DE
- Average high temperature in September: 76.5°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (40.3°F).
- Average low temperature in September: 63.1°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Harrington, 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
Harrington, DE
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Harrington, DE
- Average humidity in September: 79%
The months with the highest relative humidity are May, August and September (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in September
Harrington, DE
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in September
Harrington, DE
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9 days).
Average snowfall in September
Harrington, DE
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Harrington, DE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.3 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
Harrington, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Harrington, DE
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in September
Harrington, 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
Harrington, DE
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Harrington, 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).
Harrington, Delaware, USA
Weather forecast for your location
2. Allow the app to use your location