September weather forecast and climate
Deal Park, NJ

September, the first month of the autumn, in Deal Park, is still a pleasant month, with average temperature fluctuating between 73.2°F (22.9°C) and 65.1°F (18.4°C).

Temperature

In Deal Park, the average high-temperature marginally drops, from a warm 79.3°F (26.3°C) in August, to an agreeable 73.2°F (22.9°C). In September, the average low-temperature is 65.1°F (18.4°C).

Humidity

In September, the average relative humidity in Deal Park is 76%.

Rainfall

In Deal Park, in September, during 11 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Deal Park, during the entire year, the rain falls for 122.1 days and collects up to 11.14" (283mm) of precipitation.

Snowfall

April through September and November are months without snowfall.

Daylight

The average length of the day is 12.4h.

Sunshine

In September, the average sunshine is 9.1h.

UV index

The average daily maximum UV index in Deal Park is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Deal Park?

The average high-temperature, in September, in Deal Park, New Jersey, is 73.2°F (22.9°C), while the average low-temperature is 65.1°F (18.4°C).

What is the average humidity in September in Deal Park?

In Deal Park, New Jersey, the average relative humidity in September is 76%.

How many days does it rain in September in Deal Park?

In Deal Park, in September, it is raining for 11 days, with typically 0.75" (19mm) of accumulated precipitation.

Does it snow in Deal Park in September?

In Deal Park, New Jersey, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Deal Park?

In Deal Park, New Jersey, snow does not fall in April through September and November.

What is the average length of the day in September in Deal Park?

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

How long on average sun shines in September in Deal Park?

In September, the average sunshine is 9.1h.

What is the UV index intensity in September in Deal Park?

The average daily maximum UV index in September in Deal Park is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Deal Park, NJ
  • Average high temperature in September: 22.9°C

The warmest month (with the highest average high temperature) is July (26.8°C).
The month with the lowest average high temperature is January (3.5°C).

  • Average low temperature in September: 18.4°C

The month with the highest average low temperature is July (21.8°C).
The coldest month (with the lowest average low temperature) is January (-1.7°C).

Average pressure in September - Deal Park, NJ
  • Average pressure in September: 1017.6mbar

The month with the highest atmospheric pressure is November (1019.5mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in September - Deal Park, NJ
  • Average wind speed in September: 14.9km/h

The windiest month (with the highest average wind speed) is January (20.2km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).

Average humidity in September - Deal Park, NJ
  • Average humidity in September: 76%

Months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is November (73%).

Average rainfall in September - Deal Park, NJ
  • Average rainfall in September: 19mm

The wettest month (with the highest rainfall) is July (35mm).
The driest month (with the least rainfall) is January (14mm).

Average rainfall days in September - Deal Park, NJ
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is November (6.8 days).

Average snowfall in September - Deal Park, NJ
  • Average snowfall in September: 0mm

The month with the highest snowfall is December (12mm).
Months with the least snowfall are April, May, June, July, August, September and November (0mm).

Average snowfall days in September - Deal Park, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.2 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Deal Park, 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: 9.4h).

  • Average sunshine in September: 9.1h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days in September - Deal Park, NJ
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (14.3 days).

Average UV index in September - Deal Park, 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, March, November and December (UV index 2).

Average cloud cover in September - Deal Park, NJ
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in September - Deal Park, 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).