September weather forecastWhitehouse, NJ
September
Weather in September
September, the first month of the autumn in Whitehouse, is also a moderately hot month, with temperature in the range of an average high of 75.2°F (24°C) and an average low of 57.6°F (14.2°C).Temperature
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a moderately hot 82.2°F (27.9°C) to a still warm 75.2°F (24°C). Whitehouse's nights in September cool down to an average low-temperature of 57.6°F (14.2°C).Humidity
In Whitehouse, New Jersey, the average relative humidity in September is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.3 days and typically collects 1.57" (40mm) of precipitation.Snowfall
In Whitehouse, snow does not fall in June through September.Daylight
In September, the average length of the day 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 Whitehouse, sunrise is at 6:55 am and sunset at 6:42 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take precautions - Protection against skin and eye damage is obliged. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Whitehouse, NJ
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in September: 57.6°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in September
Whitehouse, 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
Whitehouse, NJ
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Whitehouse, NJ
- Average humidity in September: 77%
The months with the highest relative humidity are February and October (80%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Whitehouse, NJ
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Whitehouse, NJ
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in September
Whitehouse, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Whitehouse, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Whitehouse, 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 42min
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 36min).
Average sunshine days in September
Whitehouse, NJ
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in September
Whitehouse, 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
Whitehouse, NJ
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
Whitehouse, NJ
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
