September weather forecastCinnaminson, NJ
September
Weather in September
September, the first month of the autumn in Cinnaminson, is still a warm month, with an average temperature ranging between max 77°F (25°C) and min 61.3°F (16.3°C).Temperature
In September, the meteorological conditions change slightly, with the average high-temperature moving from a warm 84.2°F (29°C) in August to a still moderately hot 77°F (25°C). Throughout September, Cinnaminson witnesses a nighttime temperature average of 61.3°F (16.3°C).Humidity
In September, the average relative humidity is 75%.Rainfall
In September, the rain falls for 9.5 days. Throughout September, 0.75" (19mm) of precipitation is accumulated. Throughout the year, there are 121.5 rainfall days, and 12.44" (316mm) of precipitation is accumulated.Snowfall
In Cinnaminson, New Jersey, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:28 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cinnaminson, NJ
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure in September
Cinnaminson, NJ
- Average pressure in September: 30.05"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
Cinnaminson, NJ
- Average wind speed in September: 6.1mph
The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Cinnaminson, NJ
- Average humidity in September: 75%
The month with the highest relative humidity is October (77%).
The month with the lowest relative humidity is April (70%).
Average rainfall in September
Cinnaminson, NJ
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is August (1.46").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Cinnaminson, NJ
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (6.6 days).
Average snowfall in September
Cinnaminson, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Cinnaminson, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.6 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
Cinnaminson, NJ
- Average daylight in September: 12h and 24min
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 42min
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
Cinnaminson, NJ
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (14 days).
Average UV index in September
Cinnaminson, NJ
- 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, February, November and December (UV index 2).
Average cloud cover in September
Cinnaminson, NJ
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Cinnaminson, 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).
