September weather forecast
Pomona, NJ

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Weather in September

The first month of the autumn, September, is still a warm month in Pomona, New Jersey, with an average temperature ranging between max 74.8°F (23.8°C) and min 64.2°F (17.9°C).

Temperature

The start of September signals a gentle decrease in the average high-temperature, transitioning from 81.3°F (27.4°C) in August to a still moderately hot 74.8°F (23.8°C). During September, the nighttime temperature in Pomona averages to a comfortable 64.2°F (17.9°C).

Humidity

The average relative humidity in September is 77%.

Rainfall

In September, the rain falls for 11.8 days. Throughout September, 1.73" (44mm) of precipitation is accumulated. Throughout the year, in Pomona, New Jersey, there are 144.2 rainfall days, and 27.48" (698mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Pomona.

Daylight

The average length of the day in September in Pomona, New Jersey, is 12h and 26min.
On the first day of the month, sunrise is at 6:27 am and sunset at 7:28 pm. On the last day of September, in Pomona, New Jersey, sunrise is at 6:54 am and sunset at 6:41 pm EDT.

Sunshine

The average sunshine in September is 9.1h.

UV index

In Pomona, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the maximum UV index of 5 transforms into these recommendations:
Guard yourself - Avoiding sunburn is suggested. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What are September temperatures in Pomona?

The high-temperature in Pomona during September is 74.8°F (23.8°C) and the low-temperature is 64.2°F (17.9°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is computed to be 86°F (30°C).

What is the average humidity in September in Pomona?

In September, the average relative humidity in Pomona, New Jersey, is 77%.

How many days does it rain in September in Pomona?

In Pomona, New Jersey, in September, during 11.8 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

When it does not snow in Pomona?

In Pomona, snow does not fall in May through October.

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

The average day length in September in Pomona is 12h and 26min.

When is the sunrise / sunset in September in Pomona?

In September, on the first day of the month, sunrise is at 6:27 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:41 pm EDT.

How many hours of sunshine does Pomona have in September?

The average sunshine duration in September is 9.1h.

What is the UV index reading in September in Pomona?

The average daily maximum UV index in September in Pomona is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Pomona, NJ

Average temperature in September - Pomona, NJ
  • Average high temperature in September: 74.8°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (39.7°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 (29.7°F).

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Average pressure in September
Pomona, NJ

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

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Pomona, NJ

Average wind speed in September - Pomona, NJ
  • Average wind speed in September: 8.3mph

The windiest months (with the highest average wind speed) are January and February (10.6mph).
The calmest month (with the lowest average wind speed) is August (7.2mph).

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Average humidity in September
Pomona, NJ

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

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

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Average rainfall in September
Pomona, NJ

Average rainfall in September - Pomona, NJ
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is August (2.91").
The driest month (with the least rainfall) is January (1.61").

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Average rainfall days in September
Pomona, NJ

Average rainfall days in September - Pomona, NJ
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is July (16.1 days).
The months with the least rainy days are January and November (8.3 days).

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Average snowfall in September
Pomona, NJ

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

The month with the highest snowfall is March (1.97").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Pomona, NJ

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

The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Pomona, 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 24min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in September
Pomona, NJ

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

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (12.3 days).

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Average UV index in September
Pomona, NJ

Average UV index in September - Pomona, 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).

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Average cloud cover in September
Pomona, NJ

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

The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in September
Pomona, NJ

Average visibility in September - Pomona, 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).

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Pomona, New Jersey, USA

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