September weather forecast
Spotswood, NJ

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Weather in September

September, the first month of the autumn in Spotswood, is still a warm month, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 60.6°F (15.9°C).

Temperature

September's arrival aligns with a minor decrease in average high-temperatures, from August's 82.4°F (28°C) to a still warm 75.7°F (24.3°C). In the month of September, the nighttime temperature in Spotswood dips to a steady average of 60.6°F (15.9°C).

Humidity

In Spotswood, the average relative humidity in September is 75%.

Rainfall

September is the month with the least rainfall in Spotswood. Rain falls for 7.5 days and accumulates 0.28" (7mm) of precipitation.

Snowfall

In Spotswood, snow does not fall in April through October.

Daylight

The average length of the day in September is 12h and 27min.
On the first day of September, sunrise is at 6:25 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:40 pm EDT.

Sunshine

In September, the average sunshine in Spotswood is 8.7h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In September, the maximum UV index of 5 suggests this advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

What is the usual temperature for Spotswood in September?

The high-temperature, in September, in Spotswood, records 75.7°F (24.3°C), while the low-temperature is 60.6°F (15.9°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 87.8°F (31°C).

What is the average humidity in September?

In Spotswood, the average relative humidity in September is 75%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 7.5 days and typically collects 0.28" (7mm) of precipitation.

How many days does it rain in September?

In September, the rain falls for 7.5 days. Throughout September, 0.28" (7mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Spotswood have in September?

In Spotswood, the average day length in September is 12h and 27min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:25 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:40 pm EDT.

How long on average sun shines in September?

In Spotswood, the average sunshine duration in September is 8.7h.

What is the UV index reading in September?

In Spotswood, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Spotswood, NJ

Average temperature in September - Spotswood, NJ
  • Average high temperature in September: 75.7°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in September: 60.6°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in September
Spotswood, NJ

Average pressure in September - Spotswood, 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
Spotswood, NJ

Average wind speed in September - Spotswood, NJ
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

Average humidity in September
Spotswood, NJ

Average humidity in September - Spotswood, NJ
  • Average humidity in September: 75%

The months with the highest relative humidity are February, May, October and December (77%).
The months with the lowest relative humidity are April and August (73%).

Average rainfall in September
Spotswood, NJ

Average rainfall in September - Spotswood, NJ
  • Average rainfall in September: 0.28"

The wettest month (with the highest rainfall) is July (0.94").
The driest month (with the least rainfall) is September (0.28").

Average rainfall days in September
Spotswood, NJ

Average rainfall days in September - Spotswood, NJ
  • Average rainfall days in September: 7.5 days

The month with the highest number of rainy days is July (10.7 days).
The months with the least rainy days are January and November (4.8 days).

Average snowfall in September
Spotswood, NJ

Average snowfall in September - Spotswood, NJ
  • Average snowfall in September: 0"

The month with the highest snowfall is March (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Spotswood, NJ

Average snowfall days in September - Spotswood, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.8 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
Spotswood, NJ

Average daylight in September / Average sunshine in September - Spotswood, NJ
  • Average daylight in September: 12h and 2min

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 4min

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 42min).

Average sunshine days in September
Spotswood, NJ

Average sunshine days in September - Spotswood, NJ
  • Average sunshine days in September: 20.5 days

The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is July (15.7 days).

Average UV index in September
Spotswood, NJ

Average UV index in September - Spotswood, NJ
  • Average UV index in September: 5

The months with the highest UV index are May, 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
Spotswood, NJ

Average cloud cover in September - Spotswood, NJ
  • Average cloud cover in September: 37

The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).

Average visibility in September
Spotswood, NJ

Average visibility in September - Spotswood, 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).

Spotswood, New Jersey, USA

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