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 signals a slight drop in average high-temperature, sliding from August's warm 79.7°F (26.5°C) to a still moderately hot 73.6°F (23.1°C). Nighttime temperature reflects an average dip to a comfortable 64.6°F (18.1°C) in September, subtly cooler than its daytime highs.Humidity
In September, the average relative humidity is 77%.Rainfall
In Greenbriar, in September, it is raining for 12.3 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, in Greenbriar, there are 137.7 rainfall days, and 19.09" (485mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:24 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:40 pm EDT.
Sunshine
The average sunshine in September is 9h.UV index
In Greenbriar, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 5 suggests these recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Greenbriar have in September?
What is the UV index reading in September in Greenbriar?
Average temperature in September
Greenbriar, NJ
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 64.6°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in September
Greenbriar, 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
Greenbriar, NJ
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is January (12.2mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in September
Greenbriar, NJ
- Average humidity in September: 77%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January, March and November (74%).
Average rainfall in September
Greenbriar, NJ
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
Greenbriar, NJ
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
Greenbriar, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Greenbriar, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.4 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
Greenbriar, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Greenbriar, NJ
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Greenbriar, NJ
- Average UV index in September: 5
The months with the highest UV index are 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
Greenbriar, NJ
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Greenbriar, 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).
Greenbriar, New Jersey, USA
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