September weather forecastColonia, NJ
September
Weather in September
The first month of the autumn, September, is still a warm month in Colonia, New Jersey, with an average temperature ranging between max 75.2°F (24°C) and min 61.2°F (16.2°C).Temperature
The arrival of September correlates with a minor temperature reduction, down from August's warm 81.9°F (27.7°C) to a still moderately hot 75.2°F (24°C). An average low-temperature of 61.2°F (16.2°C) is observed during the September nights.Humidity
In Colonia, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 9.6 days and accumulates 0.39" (10mm) of precipitation.Snowfall
In Colonia, snow does not fall in May through October.Daylight
In September, the average length of the day in Colonia, New Jersey, is 12h and 27min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:40 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Colonia, New Jersey, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Colonia, NJ
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in September
Colonia, 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
Colonia, NJ
- Average wind speed in September: 7mph
The windiest months (with the highest average wind speed) are January and March (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in September
Colonia, NJ
- Average humidity in September: 75%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Colonia, NJ
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is July (1.22").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in September
Colonia, NJ
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is July (12.7 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in September
Colonia, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Colonia, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Colonia, NJ
- Average daylight in September: 12h and 30min
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 18min).
- Average sunshine in September: 8h and 54min
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 42min).
Average sunshine days in September
Colonia, NJ
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in September
Colonia, 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, March, November and December (UV index 2).
Average cloud cover in September
Colonia, NJ
- Average cloud cover in September: 35
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 30).
Average visibility in September
Colonia, 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).
