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
In September, the average high-temperature marginally drops from 82.9°F (28.3°C) in August to a still moderately hot 76.1°F (24.5°C). In Trenton, New Jersey, the average low-temperature is 59.4°F (15.2°C).Humidity
The average relative humidity in September in Trenton, New Jersey, is 76%.Rainfall
In Trenton, during September, the rain falls for 13.2 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Trenton, during the entire year, the rain falls for 156.8 days and collects up to 31.81" (808mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Trenton is 12h and 27min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:43 pm EDT.
Sunshine
In September, the average sunshine in Trenton is 8.8h.UV index
In Trenton, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
FAQ
What is the temperature in September in Trenton?
What is the average humidity in September in Trenton?
How much does it rain in Trenton in September?
When it does not snow in Trenton?
Does it snow in Trenton in September?
How many hours of daylight does Trenton have in September?
What time are sunrise and sunset in September in Trenton?
How many hours of sunshine does Trenton have in September?
What is the UV index reading in September in Trenton?
Average temperature in September
Trenton, NJ
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in September
Trenton, NJ
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Trenton, NJ
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Trenton, NJ
- Average humidity in September: 76%
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Trenton, NJ
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is July (3.74").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in September
Trenton, NJ
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in September
Trenton, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Trenton, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Trenton, NJ
- Average daylight in September: 12h and 27min
The month with the longest days is June (Average daylight: 14h and 59min).
The month with the shortest days is December (Average daylight: 9h and 22min).
- Average sunshine in September: 8h and 48min
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 48min).
Average sunshine days in September
Trenton, NJ
- Average sunshine days in September: 14 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in September
Trenton, NJ
- Average UV index in September: 4
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, February, March, November and December (UV index 2).
Average cloud cover in September
Trenton, NJ
- Average cloud cover in September: 37
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Trenton, NJ
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
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