September weather forecastUnion City, NJ
September
Weather in September
September serves as a bridge between the summer and autumn seasons in Union City. Experiencing a cool-down from the sweltering days of August, September's weather becomes more comfortable. This month is marked by the perfect equilibrium of temperature and sunshine hours, making it ideal for enjoying outdoor events. With the approach of fall, the city gears up for nature's remarkable transformation, from the bright summer colors to stunning fall hues. September winds down the summer season, setting the stage for upcoming cooler days.Temperature
September is characterized by a slight reduction in average high-temperature, easing from 82°F (27.8°C) in August to a still warm 75°F (23.9°C). In the month of September, Union City's average low-temperature falls to a comfortable 61.7°F (16.5°C).Humidity
The average relative humidity in September is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 2.2" (56mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Union City, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:39 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Union City, New Jersey, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Exercise care. People with light skin might get burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Union City, NJ
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in September
Union City, NJ
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Union City, NJ
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Union City, NJ
- Average humidity in September: 73%
The months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Union City, NJ
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
Union City, NJ
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (9 days).
Average snowfall in September
Union City, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.86").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Union City, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.7 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
Union City, NJ
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Union City, NJ
- Average sunshine days in September: 15 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (11.7 days).
Average UV index in September
Union City, 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
Union City, NJ
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Union City, 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).
