September weather forecastFlanders, NJ
September
Weather in September
September, the first month of the autumn in Flanders, is still a warm month, with an average temperature ranging between min 55°F (12.8°C) and max 74.3°F (23.5°C).Temperature
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from 80.8°F (27.1°C) to a still moderately hot 74.3°F (23.5°C). Flanders reports a consistent average low-temperature of 55°F (12.8°C) throughout September nights.Humidity
The average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 9 days and typically collects 1.02" (26mm) of precipitation.Snowfall
In Flanders, snow does not fall in June through September.Daylight
In Flanders, 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 7:30 pm. On the last day of September, in Flanders, sunrise is at 6:55 am and sunset at 6:42 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Flanders, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. 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
Average temperature in September
Flanders, NJ
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in September
Flanders, NJ
- Average pressure in September: 30.06"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
Flanders, NJ
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Flanders, NJ
- Average humidity in September: 79%
The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Flanders, NJ
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.02").
Average rainfall days in September
Flanders, NJ
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in September
Flanders, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Flanders, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Flanders, 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 36min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Flanders, NJ
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is September (19.6 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in September
Flanders, NJ
- Average UV index in September: 4
The months with the highest UV index are June and July (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
Flanders, NJ
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Flanders, NJ
- Average visibility in September: 5mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
