September weather forecast
Cooks Mills, NJ

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Weather in September

The first month of the autumn, September, is also an agreeable month in Cooks Mills, New Jersey, with an average temperature varying between 73.2°F (22.9°C) and 65.1°F (18.4°C).

Temperature

The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a moderately hot 79.3°F (26.3°C) in August to a pleasant 73.2°F (22.9°C). September in Cooks Mills witnesses a minor deviation from daytime peaks, with an average nighttime temperature of 65.1°F (18.4°C).

Humidity

The average relative humidity in September is 76%.

Rainfall

In Cooks Mills, during September, the rain falls for 11 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Cooks Mills, 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 in September is 12h and 27min.
On the first day of September, sunrise is at 6:24 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:39 pm EDT.

Sunshine

In September, the average sunshine is 9.1h.

UV index

In Cooks Mills, New Jersey, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 5 during September translates into the following directions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Updated: Aug 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

In September, the average high-temperature and low-temperature are 73.2°F (22.9°C) and 65.1°F (18.4°C) respectively.

What is the average humidity in September in Cooks Mills?

The average relative humidity in September is 76%.

How many days does it rain in September?

In September, the rain falls for 11 days. Throughout September, 0.75" (19mm) of precipitation is accumulated.

When it does not snow?

April through September and November are months without snowfall.

Does it snow in September?

In Cooks Mills, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Cooks Mills have in September?

The average day length in September is 12h and 27min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:39 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 9.1h.

What is the UV index reading in September?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cooks Mills, NJ

Average temperature in September - Cooks Mills, NJ
  • Average high temperature in September: 73.2°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in September: 65.1°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).

Average pressure in September
Cooks Mills, NJ

Average pressure in September - Cooks Mills, NJ
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Cooks Mills, NJ

Average wind speed in September - Cooks Mills, NJ
  • Average wind speed in September: 9.3mph

The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (8mph).

Average humidity in September
Cooks Mills, NJ

Average humidity in September - Cooks Mills, NJ
  • Average humidity in September: 76%

The 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
Cooks Mills, NJ

Average rainfall in September - Cooks Mills, NJ
  • Average rainfall in September: 0.75"

The wettest month (with the highest rainfall) is July (1.38").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in September
Cooks Mills, NJ

Average rainfall days in September - Cooks Mills, 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
Cooks Mills, NJ

Average snowfall in September - Cooks Mills, NJ
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.47").
The months with the least snowfall are April, May, June, July, August, September and November (0").

Average snowfall days in September
Cooks Mills, NJ

Average snowfall days in September - Cooks Mills, NJ
  • Average snowfall days in September: 0 days

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

Average daylight in September /
Average sunshine in September
Cooks Mills, NJ

Average daylight in September / Average sunshine in September - Cooks Mills, NJ
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in September
Cooks Mills, NJ

Average sunshine days in September - Cooks Mills, 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
Cooks Mills, NJ

Average UV index in September - Cooks Mills, NJ
  • Average UV index in September: 5

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

Average cloud cover in September
Cooks Mills, NJ

Average cloud cover in September - Cooks Mills, 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
Cooks Mills, NJ

Average visibility in September - Cooks Mills, NJ
  • Average visibility in September: 6mi

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

Cooks Mills, New Jersey, USA

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