September weather forecast
Millburn, NJ

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Weather in September

September, the first month of the autumn in Millburn, is still a warm month, with an average temperature varying between 75.2°F (24°C) and 60.1°F (15.6°C).

Temperature

September's arrival aligns with a minor decrease in average high-temperatures, from August's warm 81.9°F (27.7°C) to a still moderately hot 75.2°F (24°C). September's nights observe an average temperature of 60.1°F (15.6°C).

Humidity

In Millburn, the average relative humidity in September is 75%.

Rainfall

September is the month with the least rainfall in Millburn. Rain falls for 9.8 days and accumulates 0.43" (11mm) of precipitation.

Snowfall

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

Daylight

In Millburn, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:25 am and sunset at 7:29 pm. On the last day of September, in Millburn, New Jersey, sunrise is at 6:53 am and sunset at 6:40 pm EDT.

Sunshine

In Millburn, the average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September in Millburn is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 4 during September translates into the following guidance:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What is the average September temperature in Millburn?

Millburn in September has an average high-temperature of 75.2°F (24°C) and an average low-temperature of 60.1°F (15.6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is estimated at 86°F (30°C).

What is the average humidity in September in Millburn?

In September, the average relative humidity in Millburn is 75%.

What is the driest month in Millburn?

The month with the least rainfall is September, when the rain falls for 9.8 days and typically collects 0.43" (11mm) of precipitation.

How many days does it rain in September in Millburn?

In Millburn, during September, the rain falls for 9.8 days and regularly aggregates up to 0.43" (11mm) of precipitation.

When it does not snow in Millburn?

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

How many hours of daylight does Millburn have in September?

In September, the average day length in Millburn is 12h and 27min.

When is the sunrise / sunset in September in Millburn?

In September, on the first day of the month, sunrise is at 6:25 am and sunset at 7:29 pm. On the last day of the month, in Millburn, sunrise is at 6:53 am and sunset at 6:40 pm EDT.

How many hours of sunshine does Millburn have in September?

The average sunshine duration in September in Millburn, New Jersey, is 8.9h.

What is the UV index intensity in September in Millburn?

In Millburn, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Millburn, NJ

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

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in September: 60.1°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

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Average pressure in September
Millburn, NJ

Average pressure in September - Millburn, 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
Millburn, NJ

Average wind speed in September - Millburn, NJ
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).

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Average humidity in September
Millburn, NJ

Average humidity in September - Millburn, NJ
  • Average humidity in September: 75%

The months with the highest relative humidity are February and December (77%).
The months with the lowest relative humidity are April and August (72%).

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Average rainfall in September
Millburn, NJ

Average rainfall in September - Millburn, NJ
  • Average rainfall in September: 0.43"

The wettest month (with the highest rainfall) is July (1.22").
The driest month (with the least rainfall) is September (0.43").

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Average rainfall days in September
Millburn, NJ

Average rainfall days in September - Millburn, NJ
  • Average rainfall days in September: 9.8 days

The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (5.9 days).

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Average snowfall in September
Millburn, NJ

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

The month with the highest snowfall is March (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Millburn, NJ

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

The month with the highest number of snowfall days is February (5.1 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
Millburn, NJ

Average daylight in September / Average sunshine in September - Millburn, NJ
  • Average daylight in September: 12h and 3min

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 18min).

  • 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 42min).

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Average sunshine days in September
Millburn, NJ

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

The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is June (13.5 days).

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Average UV index in September
Millburn, NJ

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

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, March, November and December (UV index 2).

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Average cloud cover in September
Millburn, NJ

Average cloud cover in September - Millburn, NJ
  • Average cloud cover in September: 35

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in September
Millburn, NJ

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

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