September weather forecastBoonton, NJ
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Boonton, New Jersey, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 74.3°F (23.5°C).Temperature
As August makes way for September, Boonton's average high-temperature eases from 81.3°F (27.4°C) to a still moderately hot 74.3°F (23.5°C). Boonton observes an average nighttime low-temperature of 56.3°F (13.5°C) during the month of September.Humidity
In September, the average relative humidity in Boonton is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 1.77" (45mm) of precipitation.Snowfall
In Boonton, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:29 pm. On the last day of September, in Boonton, New Jersey, sunrise is at 6:53 am and sunset at 6:40 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In Boonton, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Boonton, NJ
- Average high temperature in September: 74.3°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 (34.5°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Boonton, 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
Boonton, NJ
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Boonton, NJ
- Average humidity in September: 78%
The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Boonton, NJ
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Boonton, NJ
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in September
Boonton, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Boonton, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Boonton, 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 24min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Boonton, NJ
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in September
Boonton, NJ
- Average UV index in September: 4
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
Boonton, NJ
- Average cloud cover in September: 41
The months with the most cloud cover are February, March and December (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Boonton, NJ
- Average visibility in September: 5mi
The months with the highest visibility are January, April, July, August, October, November and December (6mi).
The months with the lowest visibility are February, March, May, June and September (5mi).
