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
September marks a gentle change in average high-temperature, declining from August's 82.6°F (28.1°C) to a still moderately hot 75.9°F (24.4°C). During the month of September, the temperature generally drops to a low average of 59.9°F (15.5°C).Humidity
In September, the average relative humidity is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.7 days and typically collects 1.65" (42mm) of precipitation.Snowfall
In Robbinsville, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:29 pm. On the last day of September, in Robbinsville, sunrise is at 6:54 am and sunset at 6:41 pm EDT.
Sunshine
In Robbinsville, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index in Robbinsville, New Jersey, is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September translates into the following guidance:
Take precautions - Protection against sunburn is recommended. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What are September temperatures in Robbinsville?
What is the average humidity in September in Robbinsville?
What is the driest month in Robbinsville?
How much does it rain in Robbinsville in September?
When it does not snow in Robbinsville?
How many hours of daylight does Robbinsville have in September?
When is the sunrise / sunset in September in Robbinsville?
How long on average sun shines in September in Robbinsville?
What is the UV index intensity in September in Robbinsville?
Average temperature in September
Robbinsville, NJ
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in September
Robbinsville, 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
Robbinsville, NJ
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Robbinsville, NJ
- Average humidity in September: 77%
The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Robbinsville, NJ
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Robbinsville, NJ
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Robbinsville, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.11").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Robbinsville, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Robbinsville, NJ
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Robbinsville, NJ
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11 days).
Average UV index in September
Robbinsville, 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, November and December (UV index 2).
Average cloud cover in September
Robbinsville, NJ
- Average cloud cover in September: 38
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Robbinsville, NJ
- 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).
Robbinsville, New Jersey, USA
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