September weather forecast
Brewster, MA

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Weather in September

The first month of the autumn, September, is also an enjoyable month in Brewster, Massachusetts, with an average temperature fluctuating between 66.6°F (19.2°C) and 62.4°F (16.9°C).

Temperature

The advent of September reveals an average high-temperature of a refreshing 66.6°F (19.2°C), showing minimal difference from the prior month. Brewster observes an average low-temperature of 62.4°F (16.9°C) during the slightly cooler nights of September.

Humidity

In Brewster, the average relative humidity in September is 80%.

Rainfall

In Brewster, Massachusetts, during September, the rain falls for 5.5 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Brewster, Massachusetts, during the entire year, the rain falls for 78.2 days and collects up to 5.75" (146mm) of precipitation.

Snowfall

In Brewster, snow does not fall in April through October.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of September in Brewster, sunrise is at 6:06 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:23 pm EDT.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

What is the temperature in September in Brewster?

In September, the average high-temperature and low-temperature in Brewster, Massachusetts, are 66.6°F (19.2°C) and 62.4°F (16.9°C) respectively.

What is the average humidity in September in Brewster?

In Brewster, Massachusetts, the average relative humidity in September is 80%.

How many days does it rain in September in Brewster?

In Brewster, Massachusetts, in September, it is raining for 5.5 days, with typically 0.47" (12mm) of accumulated precipitation.

When it does not snow in Brewster?

In Brewster, Massachusetts, snow does not fall in April through October.

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

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

What time are sunrise and sunset in September in Brewster?

In September, on the first day of the month, sunrise is at 6:06 am and sunset at 7:13 pm. On the last day of the month, in Brewster, Massachusetts, sunrise is at 6:36 am and sunset at 6:23 pm EDT.

How many hours of sunshine does Brewster have in September?

In Brewster, Massachusetts, the average sunshine duration in September is 8.6h.

How high is the UV index in September in Brewster?

In Brewster, Massachusetts, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Brewster, MA

Average temperature in September - Brewster, MA
  • Average high temperature in September: 66.6°F

The warmest month (with the highest average high temperature) is August (71.4°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 62.4°F

The month with the highest average low temperature is August (67.8°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

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Average pressure in September
Brewster, MA

Average pressure in September - Brewster, 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
Brewster, MA

Average wind speed in September - Brewster, MA
  • Average wind speed in September: 13.4mph

The windiest month (with the highest average wind speed) is January (18.3mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).

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Average humidity in September
Brewster, MA

Average humidity in September - Brewster, MA
  • Average humidity in September: 80%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (74%).

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Average rainfall in September
Brewster, MA

Average rainfall in September - Brewster, MA
  • Average rainfall in September: 0.47"

The wettest month (with the highest rainfall) is October (0.87").
The driest months (with the least rainfall) are July and August (0.28").

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Average rainfall days in September
Brewster, MA

Average rainfall days in September - Brewster, MA
  • Average rainfall days in September: 5.5 days

The month with the highest number of rainy days is April (8.2 days).
The month with the least rainy days is February (4.8 days).

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Average snowfall in September
Brewster, MA

Average snowfall in September - Brewster, MA
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.31").
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
Brewster, MA

Average snowfall days in September - Brewster, MA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.7 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
Brewster, MA

Average daylight in September / Average sunshine in September - Brewster, 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 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

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Average sunshine days in September
Brewster, MA

Average sunshine days in September - Brewster, MA
  • Average sunshine days in September: 23.4 days

The month with the most sunshine days is September (23.4 days).
The month with the least sunshine days is February (19.8 days).

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Average UV index in September
Brewster, MA

Average UV index in September - Brewster, MA
  • Average UV index in September: 4

The months with the highest UV index are 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
Brewster, MA

Average cloud cover in September - Brewster, MA
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in September
Brewster, MA

Average visibility in September - Brewster, 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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Brewster, Massachusetts, USA

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