September weather forecast
Heislerville, NJ

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Weather in September

The first month of the autumn, September, is still a warm month in Heislerville, New Jersey, with an average temperature ranging between max 73.9°F (23.3°C) and min 66.2°F (19°C).

Temperature

September's onset introduces a mild reduction in the average high-temperature, from 79.9°F (26.6°C) in August to a still warm 73.9°F (23.3°C). Heislerville records a slight downturn to an average a comfortable 66.2°F (19°C) during the nights of September.

Humidity

In Heislerville, the average relative humidity in September is 77%.

Rainfall

In Heislerville, in September, during 10.6 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Heislerville, during the entire year, the rain falls for 130.8 days and collects up to 13.23" (336mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Heislerville, New Jersey, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:30 pm. On the last day of September, in Heislerville, sunrise is at 6:55 am and sunset at 6:43 pm EDT.

Sunshine

The average sunshine in September is 9.5h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Undertake precautions - Guarding against sun damage is counselled. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

What is the temperature in September in Heislerville?

The average high-temperature, in September, in Heislerville, is 73.9°F (23.3°C), while the average low-temperature is 66.2°F (19°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 86°F (30°C).

What is the average humidity in September in Heislerville?

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

How much does it rain in Heislerville in September?

In Heislerville, in September, it is raining for 10.6 days, with typically 0.91" (23mm) of accumulated precipitation.

When it does not snow in Heislerville?

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

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

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

What time are sunrise and sunset in September in Heislerville?

On the first day of September in Heislerville, sunrise is at 6:29 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm EDT.

How long on average sun shines in September in Heislerville?

In Heislerville, New Jersey, the average sunshine duration in September is 9.5h.

What is the UV index reading in September in Heislerville?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents 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
Heislerville, NJ

Average temperature in September - Heislerville, NJ
  • Average high temperature in September: 73.9°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in September: 66.2°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).

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Average pressure in September
Heislerville, NJ

Average pressure in September - Heislerville, 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
Heislerville, NJ

Average wind speed in September - Heislerville, NJ
  • Average wind speed in September: 9.5mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).

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Average humidity in September
Heislerville, NJ

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

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).

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Average rainfall in September
Heislerville, NJ

Average rainfall in September - Heislerville, NJ
  • Average rainfall in September: 0.91"

The wettest month (with the highest rainfall) is August (1.61").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in September
Heislerville, NJ

Average rainfall days in September - Heislerville, NJ
  • Average rainfall days in September: 10.6 days

The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (7 days).

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Average snowfall in September
Heislerville, NJ

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

The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Heislerville, NJ

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

The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Heislerville, 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 3min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in September
Heislerville, NJ

Average sunshine days in September - Heislerville, NJ
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (13.4 days).

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Average UV index in September
Heislerville, NJ

Average UV index in September - Heislerville, 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 and December (UV index 2).

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Average cloud cover in September
Heislerville, NJ

Average cloud cover in September - Heislerville, NJ
  • Average cloud cover in September: 29

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in September
Heislerville, NJ

Average visibility in September - Heislerville, 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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Heislerville, New Jersey, USA

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