September weather forecast and climate
Allaire, NJ

September, the first month of the autumn, in Allaire, is still a warm month, with average temperature varying between 73.8°F (23.2°C) and 64.2°F (17.9°C).

Temperature

In Allaire, New Jersey, the average high-temperature slightly decreases, from 79.7°F (26.5°C) in August, to a still warm 73.8°F (23.2°C). In Allaire, New Jersey, the average low-temperature is 64.2°F (17.9°C).

Humidity

The average relative humidity in Allaire is 77%.

Rainfall

In Allaire, New Jersey, in September, it is raining for 11.9 days, with typically 1.18" (30mm) of accumulated precipitation. In Allaire, New Jersey, during the entire year, the rain falls for 133.4 days and collects up to 15.08" (383mm) of precipitation.

Snowfall

April through October are months without snowfall in Allaire, New Jersey.

Daylight

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

Sunshine

The average sunshine in Allaire is 9.1h.

UV index

The average daily maximum UV index in Allaire, New Jersey, is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 5 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. 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 Allaire?

The average high-temperature, in September, is 73.8°F (23.2°C), while the average low-temperature is 64.2°F (17.9°C).

What is the average humidity in September in Allaire?

In September, the average relative humidity is 77%.

How much does it rain in Allaire in September?

In September, in Allaire, New Jersey, the rain falls for 11.9 days. Throughout September, 1.18" (30mm) of precipitation is accumulated.

When it does not snow in Allaire?

In Allaire, New Jersey, snow does not fall in April through October.

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

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

How many hours of sunshine does Allaire have in September?

In September, the average sunshine in Allaire is 9.1h.

How high is the UV index in September in Allaire?

In Allaire, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.
Average temperature in September - Allaire, NJ
  • Average high temperature in September: 73.8°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in September: 64.2°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

Average pressure in September - Allaire, 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").

Average wind speed in September - Allaire, NJ
  • Average wind speed in September: 8.8mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

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

The month with the highest relative humidity is May (80%).
Months with the lowest relative humidity are January, March and November (74%).

Average rainfall in September - Allaire, NJ
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is July (1.97").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in September - Allaire, NJ
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is November (7.4 days).

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

Months with the highest snowfall are January and December (0.71").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September - Allaire, 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 May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Allaire, 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: 4.9h).

Average sunshine days in September - Allaire, NJ
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in September - Allaire, 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, November and December (UV index 2).

Average cloud cover in September - Allaire, NJ
  • Average cloud cover in September: 33

Months with the most cloud cover are February, March and December (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 27).

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

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