September weather forecast
Florence, NJ

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Weather in September

September, the first month of the autumn in Florence, is still a warm month, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 59.9°F (15.5°C).

Temperature

The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's 83.1°F (28.4°C) to a still moderately hot 76.5°F (24.7°C). Florence's temperature in September lowers to a consistent average of 59.9°F (15.5°C) during the nights.

Humidity

The average relative humidity in September in Florence is 76%.

Rainfall

In September, in Florence, the rain falls for 12.7 days. Throughout September, 1.93" (49mm) of precipitation is accumulated. In Florence, during the entire year, the rain falls for 154.4 days and collects up to 31.38" (797mm) of precipitation.

Snowfall

June through October are months without snowfall.

Daylight

In Florence, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:27 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm EDT.

Sunshine

In September, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 in September interprets into the following advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. When the Sun is at its strongest around midday, find shade and limit exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

What is the usual temperature for Florence in September?

An average high-temperature, in September, in Florence, is 76.5°F (24.7°C) and the average low-temperature is 59.9°F (15.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is estimated at 89.6°F (32°C).

What is the average humidity in September in Florence?

In Florence, the average relative humidity in September is 76%.

How many days does it rain in September in Florence?

In Florence, in September, it is raining for 12.7 days, with typically 1.93" (49mm) of accumulated precipitation.

When it does not snow in Florence?

June through October are months without snowfall.

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

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

When are sunrise and sunset in September in Florence?

On the first day of September in Florence, sunrise is at 6:27 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm EDT.

How long on average sun shines in September in Florence?

In September, the average sunshine duration is 8.8h.

How high is the UV index in September in Florence?

In September, the average daily maximum UV index in Florence is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's 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
Florence, NJ

Average temperature in September - Florence, NJ
  • Average high temperature in September: 76.5°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in September
Florence, NJ

Average pressure in September - Florence, 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).

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Average wind speed in September
Florence, NJ

Average wind speed in September - Florence, NJ
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in September
Florence, NJ

Average humidity in September - Florence, NJ
  • Average humidity in September: 76%

The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in September
Florence, NJ

Average rainfall in September - Florence, NJ
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is January (1.89").

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Average rainfall days in September
Florence, NJ

Average rainfall days in September - Florence, NJ
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8 days).

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Average snowfall in September
Florence, NJ

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

The month with the highest snowfall is March (2.99").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Florence, NJ

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

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Florence, 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: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in September
Florence, NJ

Average sunshine days in September - Florence, NJ
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.9 days).

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Average UV index in September
Florence, NJ

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

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, November and December (UV index 2).

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Average cloud cover in September
Florence, NJ

Average cloud cover in September - Florence, NJ
  • Average cloud cover in September: 37

The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in September
Florence, NJ

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

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

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Florence, New Jersey, USA

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