September weather forecast
Fortescue, NJ

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Weather in September

September, the first month of the autumn in Fortescue, is still a warm month, with an average temperature varying between 62.8°F (17.1°C) and 75.9°F (24.4°C).

Temperature

In September, the average high-temperature marginally drops from 82°F (27.8°C) in August to a still warm 75.9°F (24.4°C). Fortescue records an average nighttime low of 62.8°F (17.1°C) in September.

Humidity

The average relative humidity in September is 78%.

Rainfall

In Fortescue, during September, the rain falls for 11.1 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, there are 132.2 rainfall days, and 15.39" (391mm) of precipitation is accumulated.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of September, sunrise is at 6:29 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:44 pm EDT.

Sunshine

In Fortescue, the average sunshine in September is 9.3h.

UV index

In Fortescue, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: In September, the UV index of 5 transforms into the following advice:
Prioritize safety - Recommendations to avert sunburn are shared. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Fortescue?

Fortescue in September has an average high-temperature of 75.9°F (24.4°C) and an average low-temperature of 62.8°F (17.1°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is appraised at 87.8°F (31°C).

What is the average humidity in September?

In Fortescue, the average relative humidity in September is 78%.

How many days does it rain in September?

In Fortescue, during September, the rain falls for 11.1 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

In September, the average day length is 12h and 26min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:29 am and sunset at 7:30 pm. On the last day of the month, in Fortescue, sunrise is at 6:56 am and sunset at 6:44 pm EDT.

How long on average sun shines in September?

In Fortescue, the average sunshine duration in September is 9.3h.

How high is the UV index in September in Fortescue?

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
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
Fortescue, NJ

Average temperature in September - Fortescue, NJ
  • Average high temperature in September: 75.9°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in September: 62.8°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

Average pressure in September
Fortescue, NJ

Average pressure in September - Fortescue, NJ
  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Fortescue, NJ

Average wind speed in September - Fortescue, NJ
  • Average wind speed in September: 7.3mph

The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in September
Fortescue, NJ

Average humidity in September - Fortescue, NJ
  • Average humidity in September: 78%

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

Average rainfall in September
Fortescue, NJ

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

The wettest month (with the highest rainfall) is August (1.81").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in September
Fortescue, NJ

Average rainfall days in September - Fortescue, NJ
  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is November (7.3 days).

Average snowfall in September
Fortescue, NJ

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

The month with the highest snowfall is January (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Fortescue, NJ

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

The month with the highest number of snowfall days is January (4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Fortescue, NJ

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in September
Fortescue, NJ

Average sunshine days in September - Fortescue, NJ
  • Average sunshine days in September: 17.2 days

The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in September
Fortescue, NJ

Average UV index in September - Fortescue, NJ
  • Average UV index in September: 5

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

Average cloud cover in September
Fortescue, NJ

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

The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in September
Fortescue, NJ

Average visibility in September - Fortescue, 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).

Fortescue, New Jersey, USA

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