September weather forecast and climate
Manville, NJ

Weather in September

The first month of the autumn, September, is also a moderately hot month in Manville, New Jersey, with average temperature ranging between min 58.1°F (14.5°C) and max 75.2°F (24°C).

Temperature

In September, the average high-temperature slightly decreases, from 82.4°F (28°C) in August, to a still warm 75.2°F (24°C). In September, in Manville, New Jersey, the average low-temperature is 58.1°F (14.5°C).

Humidity

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

Rainfall

September is the month with the least rainfall in Manville. Rain falls for 12.3 days and accumulates 1.54" (39mm) of precipitation.

Snowfall

In Manville snow does not fall in June through September.

Daylight

In Manville, the average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine in Manville is 8.6h.

UV index

In Manville, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Manville?

The average high-temperature, in September, in Manville, is 75.2°F (24°C), while the average low-temperature is 58.1°F (14.5°C).

What is the average humidity in September in Manville?

The average relative humidity in September in Manville, New Jersey, is 76%.

How much does it rain in Manville in September?

In Manville, in September, during 12.3 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

What is the driest month in Manville?

September is the month with the least rainfall in Manville. Rain falls for 12.3 days and accumulates 1.54" (39mm) of precipitation.

Does it snow in Manville in September?

In Manville, New Jersey, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Manville?

June through September are months without snowfall in Manville.

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

The average length of the day in September in Manville is 12.4h.

How many hours of sunshine does Manville have in September?

In September, the average sunshine in Manville, New Jersey, is 8.6h.

What is the UV index intensity in September in Manville?

In Manville, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
Manville, NJ

Average temperature in September - Manville, NJ
  • Average high temperature in September: 75.2°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in September: 58.1°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

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Average pressure in September
Manville, NJ

Average pressure in September - Manville, NJ
  • Average pressure in September: 30.06"

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

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Average wind speed in September
Manville, NJ

Average wind speed in September - Manville, NJ
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in September
Manville, NJ

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

Months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in September
Manville, NJ

Average rainfall in September - Manville, NJ
  • Average rainfall in September: 1.54"

The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days in September
Manville, NJ

Average rainfall days in September - Manville, NJ
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (9 days).

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Average snowfall in September
Manville, NJ

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

The month with the highest snowfall is March (2.83").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Manville, NJ

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

The month with the highest number of snowfall days is January (6.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Manville, NJ
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.6h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

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Average sunshine days in September
Manville, NJ

Average sunshine days in September - Manville, NJ
  • Average sunshine days in September: 15 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (11.7 days).

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Average UV index in September
Manville, NJ

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

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

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Average cloud cover in September
Manville, NJ

Average cloud cover in September - Manville, NJ
  • Average cloud cover in September: 40

Months with the most cloud cover are February and December (Cloud cover 49).
Months with the least cloud cover are July and August (Cloud cover 34).

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Average visibility in September
Manville, NJ

Average visibility in September - Manville, NJ
  • Average visibility in September: 5mi

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

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