September weather forecast and climate
Dennisville, NJ

September, the first month of the autumn, in Dennisville, is still a warm month, with average temperature ranging between max 73.9°F (23.3°C) and min 66.2°F (19°C).

Temperature

In Dennisville, the average high-temperature in September slightly decreases, from 79.9°F (26.6°C) in August, to a still moderately hot 73.9°F (23.3°C). The average low-temperature, in September, is 66.2°F (19°C).

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Dennisville, it is raining for 10.6 days, with typically 0.91" (23mm) of accumulated precipitation. In Dennisville, New Jersey, during the entire year, the rain falls for 130.8 days and collects up to 13.23" (336mm) of precipitation.

Snowfall

In Dennisville snow does not fall in April through October.

Daylight

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

Sunshine

In Dennisville, New Jersey, the average sunshine is 9.5h.

UV index

In September, the average daily maximum UV index in Dennisville is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Dennisville?

In September, in Dennisville, the average high-temperature is 73.9°F (23.3°C), and the average low-temperature is 66.2°F (19°C).

What is the average humidity in September in Dennisville?

The average relative humidity in September in Dennisville is 77%.

How many days does it rain in September in Dennisville?

In September, in Dennisville, the rain falls for 10.6 days. Throughout September, 0.91" (23mm) of precipitation is accumulated.

When it does not snow in Dennisville?

April through October are months without snowfall in Dennisville.

How many hours of daylight does Dennisville have in September?

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

How many hours of sunshine does Dennisville have in September?

In September, the average sunshine in Dennisville, New Jersey, is 9.5h.

What is the UV index reading in September in Dennisville?

In September, the average daily maximum UV index is 5. 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 - Dennisville, NJ
  • Average high temperature in September: 23.3°C

The warmest month (with the highest average high temperature) is July (27.1°C).
The month with the lowest average high temperature is January (4.5°C).

  • Average low temperature in September: 19°C

The month with the highest average low temperature is July (22.3°C).
The coldest month (with the lowest average low temperature) is January (-0.4°C).

Average pressure in September - Dennisville, NJ
  • Average pressure in September: 1017.4mbar

The month with the highest atmospheric pressure is November (1019.8mbar).
The month with the lowest atmospheric pressure is June (1013.8mbar).

Average wind speed in September - Dennisville, NJ
  • Average wind speed in September: 15.3km/h

The windiest month (with the highest average wind speed) is January (19.2km/h).
The calmest month (with the lowest average wind speed) is August (13km/h).

Average humidity in September - Dennisville, NJ
  • Average humidity in September: 77%

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).

Average rainfall in September - Dennisville, NJ
  • Average rainfall in September: 23mm

The wettest month (with the highest rainfall) is August (41mm).
The driest month (with the least rainfall) is January (17mm).

Average rainfall days in September - Dennisville, NJ
  • Average rainfall days in September: 10.6 days

The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (7 days).

Average snowfall in September - Dennisville, NJ
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (15mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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

The month with the highest number of snowfall days is January (4.7 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 9.5h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is February (Average sunshine: 5h).

Average sunshine days in September - Dennisville, NJ
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (13.4 days).

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

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

Average cloud cover in September - Dennisville, NJ
  • Average cloud cover in September: 29

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in September - Dennisville, NJ
  • Average visibility in September: 10km

Months with the highest visibility are February, March, April, June, July, August, September, October and November (10km).
Months with the lowest visibility are January, May and December (9km).