September weather forecast
North Plymouth, MA

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Weather in September

The first month of the autumn, September, is also an agreeable month in North Plymouth, Massachusetts, with an average temperature varying between 70.2°F (21.2°C) and 59.7°F (15.4°C).

Temperature

September marks a gentle change in average high-temperature, declining from August's warm 76.6°F (24.8°C) to a pleasant 70.2°F (21.2°C). Throughout September nights, North Plymouth experiences a consistent temperature average of 59.7°F (15.4°C).

Humidity

In September, the average relative humidity in North Plymouth is 78%.

Rainfall

In North Plymouth, in September, it is raining for 11 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, in North Plymouth, there are 132.2 rainfall days, and 16.3" (414mm) of precipitation is accumulated.

Snowfall

In North Plymouth, snow does not fall in May through October.

Ocean temperature

In September, the average ocean temperature in North Plymouth, Massachusetts, is 65.8°F (18.8°C).
Note: The majority find it unenjoyable to swim in 65.8°F (18.8°C). Breathing becomes tougher as the water temperature descends under 69.8°F (21°C).

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of September in North Plymouth, sunrise is at 6:09 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:25 pm EDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in September in North Plymouth is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 4 in September translates into this advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

What is the average September temperature in North Plymouth?

In September, the average high-temperature and low-temperature in North Plymouth, Massachusetts, are 70.2°F (21.2°C) and 59.7°F (15.4°C) respectively.

What is the average humidity in September in North Plymouth?

In September, the average relative humidity is 78%.

How much does it rain in North Plymouth in September?

In North Plymouth, Massachusetts, in September, during 11 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When it does not snow in North Plymouth?

In North Plymouth, snow does not fall in May through October.

What is the ocean temperature in September in North Plymouth?

In September, the average ocean temperature in North Plymouth is 65.8°F (18.8°C). Swimming in 65.8°F (18.8°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

How many hours of daylight does North Plymouth have in September?

In September, the average day length in North Plymouth is 12h and 28min.

When is the sunrise / sunset in September in North Plymouth?

On the first day of September in North Plymouth, Massachusetts, sunrise is at 6:09 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:25 pm EDT.

How long on average sun shines in September in North Plymouth?

In North Plymouth, the average sunshine duration in September is 8.6h.

What is the UV index reading in September in North Plymouth?

In September, the average daily maximum UV index in North Plymouth is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to 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
North Plymouth, MA

Average temperature in September - North Plymouth, MA
  • Average high temperature in September: 70.2°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in September: 59.7°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in September
North Plymouth, MA

Average pressure in September - North Plymouth, MA
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
North Plymouth, MA

Average wind speed in September - North Plymouth, MA
  • Average wind speed in September: 9.1mph

The windiest month (with the highest average wind speed) is January (12.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

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Average humidity in September
North Plymouth, MA

Average humidity in September - North Plymouth, MA
  • Average humidity in September: 78%

The month with the highest relative humidity is July (80%).
The months with the lowest relative humidity are March, April and November (74%).

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Average rainfall in September
North Plymouth, MA

Average rainfall in September - North Plymouth, MA
  • Average rainfall in September: 1.1"

The wettest months (with the highest rainfall) are July and October (1.65").
The driest month (with the least rainfall) is February (1.02").

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Average rainfall days in September
North Plymouth, MA

Average rainfall days in September - North Plymouth, MA
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (7.4 days).

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Average snowfall in September
North Plymouth, MA

Average snowfall in September - North Plymouth, MA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
North Plymouth, MA

Average snowfall days in September - North Plymouth, MA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in September
North Plymouth, MA

Average sea temperature in September - North Plymouth, MA
  • Average sea temperature in September: 65.8°F

The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).

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Average daylight in September /
Average sunshine in September
North Plymouth, MA

Average daylight in September / Average sunshine in September - North Plymouth, MA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).

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Average sunshine days in September
North Plymouth, MA

Average sunshine days in September - North Plymouth, MA
  • Average sunshine days in September: 17 days

The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is July (14.8 days).

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Average UV index in September
North Plymouth, MA

Average UV index in September - North Plymouth, MA
  • 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
North Plymouth, MA

Average cloud cover in September - North Plymouth, MA
  • Average cloud cover in September: 33

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in September
North Plymouth, MA

Average visibility in September - North Plymouth, MA
  • 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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North Plymouth, Massachusetts, USA

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