September weather forecast and climate
Wyckoff, NJ

September, the first month of the autumn, in Wyckoff, is still a warm month, with average temperature ranging between min 56.7°F (13.7°C) and max 74.5°F (23.6°C).

Temperature

In Wyckoff, the average high-temperature in September marginally drops, from a warm 81.3°F (27.4°C) in August, to a still moderately hot 74.5°F (23.6°C). The average low-temperature, in Wyckoff, is 56.7°F (13.7°C).

Humidity

In September, the average relative humidity is 77%.

Rainfall

September is the month with the least rainfall in Wyckoff. Rain falls for 12.9 days and accumulates 1.5" (38mm) of precipitation.

Snowfall

In Wyckoff snow does not fall in June through September.

Daylight

In Wyckoff, New Jersey, the average length of the day is 12.4h.

Sunshine

The average sunshine in Wyckoff, New Jersey, is 8.5h.

UV index

In September, the average daily maximum UV index in Wyckoff is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Wyckoff?

The average high-temperature, in September, is 74.5°F (23.6°C), while the average low-temperature is 56.7°F (13.7°C).

What is the average humidity in September in Wyckoff?

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

How many days does it rain in September in Wyckoff?

In Wyckoff, New Jersey, in September, it is raining for 12.9 days, with typically 1.5" (38mm) of accumulated precipitation.

What is the driest month in Wyckoff?

September is the month with the least rainfall in Wyckoff. Rain falls for 12.9 days and accumulates 1.5" (38mm) of precipitation.

Does it snow in Wyckoff in September?

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

When it does not snow in Wyckoff?

In Wyckoff snow does not fall in June through September.

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

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

How many hours of sunshine does Wyckoff have in September?

The average sunshine in September is 8.5h.

What is the UV index reading in September in Wyckoff?

In Wyckoff, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in September - Wyckoff, NJ
  • Average high temperature in September: 23.6°C

The warmest month (with the highest average high temperature) is July (28.8°C).
The month with the lowest average high temperature is January (1.4°C).

  • Average low temperature in September: 13.7°C

The month with the highest average low temperature is July (18.1°C).
The coldest month (with the lowest average low temperature) is January (-5.8°C).

Average pressure in September - Wyckoff, NJ
  • Average pressure in September: 1017.8mbar

The month with the highest atmospheric pressure is November (1019.5mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

Average wind speed in September - Wyckoff, NJ
  • Average wind speed in September: 9km/h

The windiest month (with the highest average wind speed) is March (12.9km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).

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

Months with the highest relative humidity are February and December (80%).
Months with the lowest relative humidity are April, July and August (74%).

Average rainfall in September - Wyckoff, NJ
  • Average rainfall in September: 38mm

The wettest month (with the highest rainfall) is July (74mm).
The driest month (with the least rainfall) is September (38mm).

Average rainfall days in September - Wyckoff, NJ
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (6.6 days).

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

The month with the highest snowfall is March (108mm).
Months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is February (7.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.4h).

Average sunshine days in September - Wyckoff, NJ
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.9 days).

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

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 - Wyckoff, NJ
  • Average cloud cover in September: 41

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in September - Wyckoff, NJ
  • Average visibility in September: 8km

Months with the highest visibility are January, March, April, July, August, October, November and December (9km).
Months with the lowest visibility are February, May, June and September (8km).