September weather forecast and climate
Holland, NJ

The first month of the autumn, September, is still a warm month in Holland, New Jersey, with average temperature fluctuating between 59.4°F (15.2°C) and 76.3°F (24.6°C).

Temperature

In September, the average high-temperature marginally drops, from 83.3°F (28.5°C) in August, to a still moderately hot 76.3°F (24.6°C). In September, in Holland, the average low-temperature is 59.4°F (15.2°C).

Humidity

In September, the average relative humidity is 75%.

Rainfall

September is the month with the least rainfall in Holland. Rain falls for 12.2 days and accumulates 1.89" (48mm) of precipitation.

Snowfall

In Holland snow does not fall in June through September.

Daylight

In Holland, New Jersey, the average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine is 8.7h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
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. 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 Holland?

In September, in Holland, the average high-temperature is 76.3°F (24.6°C), and the average low-temperature is 59.4°F (15.2°C).

What is the average humidity in September in Holland?

The average relative humidity in September is 75%.

How many days does it rain in September in Holland?

In Holland, New Jersey, during September, the rain falls for 12.2 days and regularly aggregates up to 1.89" (48mm) of precipitation.

What is the driest month in Holland?

The month with the least rainfall in Holland, New Jersey, is September when the rain falls for 12.2 days and typically collects 1.89" (48mm) of precipitation.

Does it snow in Holland in September?

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

When it does not snow in Holland?

In Holland snow does not fall in June through September.

How many hours of daylight does Holland have in September?

In September, the average length of the day in Holland, New Jersey, is 12.4h.

How many hours of sunshine does Holland have in September?

The average sunshine in September is 8.7h.

What is the UV index intensity in September in Holland?

In Holland, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.
Average temperature in September - Holland, NJ
  • Average high temperature in September: 76.3°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in September: 59.4°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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

The month with the highest atmospheric pressure is November (30.12").
The month with the lowest atmospheric pressure is June (29.93").

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

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in September - Holland, NJ
  • Average humidity in September: 75%

Months with the highest relative humidity are February and October (78%).
Months with the lowest relative humidity are April, July and August (72%).

Average rainfall in September - Holland, NJ
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in September - Holland, NJ
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is November (8.5 days).

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

The month with the highest snowfall is March (3.78").
Months with the least snowfall are June, July, August and September (0").

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

The month with the highest number of snowfall days is January (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 - Holland, 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: 8.7h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.7h).

Average sunshine days in September - Holland, NJ
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (11.4 days).

Average UV index in September - Holland, 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).

Average cloud cover in September - Holland, NJ
  • Average cloud cover in September: 38

Months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in September - Holland, NJ
  • Average visibility in September: 5mi

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