September weather forecast
Pennington, NJ

Weather in September

The first month of the autumn, September, is also a moderately hot month in Pennington, New Jersey, with average temperature ranging between min 59°F (15°C) and max 76.1°F (24.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 82.9°F (28.3°C) in August, to a still moderately hot 76.1°F (24.5°C). In Pennington, the average low-temperature is 59°F (15°C).

Humidity

In Pennington, the average relative humidity is 76%.

Rainfall

In Pennington, it is raining for 11.6 days, with typically 0.98" (25mm) of accumulated precipitation. Throughout the year, in Pennington, there are 138.1 rainfall days, and 16.5" (419mm) of precipitation is accumulated.

Snowfall

In Pennington snow does not fall in June through October.

Daylight

In September, the average length of the day is 12.4h.

Sunshine

In Pennington, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
[Resources]

FAQ

What is the average humidity in September in Pennington?

The average relative humidity in September in Pennington, New Jersey, is 76%.

How many days does it rain in September in Pennington?

In September, the rain falls for 11.6 days. Throughout September, 0.98" (25mm) of precipitation is accumulated.

When it does not snow in Pennington?

In Pennington, New Jersey, snow does not fall in June through October.

What is the average length of the day in September in Pennington?

The average length of the day in September in Pennington, New Jersey, is 12.4h.

How long on average sun shines in September in Pennington?

In Pennington, the average sunshine in September is 8.8h.

What is the UV index intensity in September in Pennington?

The average daily maximum UV index in September in Pennington is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
Pennington, NJ

Average temperature in September - Pennington, NJ
  • Average high temperature in September: 76.1°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in September: 59°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

[Resources]

Average pressure in September
Pennington, NJ

Average pressure in September - Pennington, NJ
  • Average pressure in September: 30.05"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

[Resources]

Average wind speed in September
Pennington, NJ

Average wind speed in September - Pennington, NJ
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

[Resources]

Average humidity in September
Pennington, NJ

Average humidity in September - Pennington, NJ
  • Average humidity in September: 76%

Months with the highest relative humidity are February, October and December (78%).
Months with the lowest relative humidity are April and July (73%).

[Resources]

Average rainfall in September
Pennington, NJ

Average rainfall in September - Pennington, NJ
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is January (0.87").

[Resources]

Average rainfall days in September
Pennington, NJ

Average rainfall days in September - Pennington, NJ
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is November (7.2 days).

[Resources]

Average snowfall in September
Pennington, NJ

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

The month with the highest snowfall is February (0.71").
Months with the least snowfall are June, July, August, September and October (0").

[Resources]

Average snowfall days in September
Pennington, NJ

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

The month with the highest number of snowfall days is January (4.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Pennington, NJ

Average daylight in September / Average sunshine in September - Pennington, NJ
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

[Resources]

Average sunshine days in September
Pennington, NJ

Average sunshine days in September - Pennington, NJ
  • Average sunshine days in September: 16.3 days

The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is July (12.3 days).

[Resources]

Average UV index in September
Pennington, NJ

Average UV index in September - Pennington, NJ
  • Average UV index in September: 4

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

[Resources]

Average cloud cover in September
Pennington, NJ

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

Months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

[Resources]

Average visibility in September
Pennington, NJ

Average visibility in September - Pennington, NJ
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location