September weather forecast
Bourne, MA

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Weather in September

The first month of the autumn, September, is also an agreeable month in Bourne, Massachusetts, with an average temperature ranging between min 61.2°F (16.2°C) and max 68.9°F (20.5°C).

Temperature

The start of September comes with a small reduction in the average high-temperature, subtly receding from a moderately hot 75.2°F (24°C) in August to an agreeable 68.9°F (20.5°C). Bourne marks an average drop to a comfortable 61.2°F (16.2°C) during nighttime in September, following the high of the day.

Humidity

The average relative humidity in September in Bourne is 79%.

Rainfall

The month with the least rainfall in Bourne, Massachusetts, is September, when the rain falls for 12.3 days and typically collects 1.81" (46mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Bourne, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:09 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:38 am and sunset at 6:25 pm EDT.

Sunshine

In Bourne, the average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September in Bourne is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 4 in September interprets into the following advice:
Guard yourself - Precautionary measures against sun damage are advocated. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What is the usual temperature for Bourne in September?

In Bourne, in September, the average high-temperature is 68.9°F (20.5°C), and the average low-temperature is 61.2°F (16.2°C).

What is the average humidity in September in Bourne?

In Bourne, Massachusetts, the average relative humidity in September is 79%.

What is the driest month in Bourne?

The month with the least rainfall in Bourne, Massachusetts, is September, when the rain falls for 12.3 days and typically collects 1.81" (46mm) of precipitation.

How many days does it rain in September in Bourne?

In Bourne, Massachusetts, during September, the rain falls for 12.3 days and regularly aggregates up to 1.81" (46mm) of precipitation.

When it does not snow in Bourne?

In Bourne, Massachusetts, snow does not fall in May through September.

Does it snow in Bourne in September?

In Bourne, Massachusetts, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Bourne have in September?

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

When is the sunrise / sunset in September in Bourne?

On the first day of September in Bourne, sunrise is at 6:09 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:25 pm EDT.

How many hours of sunshine does Bourne have in September?

In September, the average sunshine duration in Bourne, Massachusetts, is 8.7h.

What is the UV index reading in September in Bourne?

The average daily maximum UV index in September in Bourne, Massachusetts, is 4. A UV Index value of 3 to 5 symbolizes 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
Bourne, MA

Average temperature in September - Bourne, MA
  • Average high temperature in September: 68.9°F

The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in September: 61.2°F

The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in September
Bourne, MA

Average pressure in September - Bourne, 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
Bourne, MA

Average wind speed in September - Bourne, MA
  • Average wind speed in September: 10.3mph

The windiest month (with the highest average wind speed) is January (13.7mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

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Average humidity in September
Bourne, MA

Average humidity in September - Bourne, MA
  • Average humidity in September: 79%

The months with the highest relative humidity are June and July (81%).
The months with the lowest relative humidity are March and November (74%).

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Average rainfall in September
Bourne, MA

Average rainfall in September - Bourne, MA
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in September
Bourne, MA

Average rainfall days in September - Bourne, MA
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (9 days).

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Average snowfall in September
Bourne, MA

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

The months with the highest snowfall are February and March (2.28").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Bourne, MA

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

The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Bourne, MA

Average daylight in September / Average sunshine in September - Bourne, 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 months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days in September
Bourne, MA

Average sunshine days in September - Bourne, MA
  • Average sunshine days in September: 15.4 days

The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is April (12.5 days).

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Average UV index in September
Bourne, MA

Average UV index in September - Bourne, 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
Bourne, MA

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

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in September
Bourne, MA

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

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