September weather forecast
Somerset, MA

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Weather in September

September, the first month of the autumn in Somerset, is still a pleasant month, with an average temperature ranging between max 72.1°F (22.3°C) and min 58.8°F (14.9°C).

Temperature

The transition to September results in a modest reduction in average high-temperature, moving from a warm 78.6°F (25.9°C) in August to an agreeable 72.1°F (22.3°C). During the month of September, the nighttime temperature falls to an average of 58.8°F (14.9°C).

Humidity

In September, the average relative humidity is 78%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.2 days and accumulates 1.06" (27mm) of precipitation.

Snowfall

In Somerset, Massachusetts, snow does not fall in June through October.

Daylight

In Somerset, the average length of the day in September is 12h and 28min.
On the first day of September in Somerset, sunrise is at 6:11 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:27 pm EDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

In Somerset, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Somerset?

The average high-temperature and low-temperature during September are 72.1°F (22.3°C) and 58.8°F (14.9°C) respectively.

What is the average humidity in September?

The average relative humidity in September is 78%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.2 days and accumulates 1.06" (27mm) of precipitation.

How many days does it rain in September?

In Somerset, during September, the rain falls for 11.2 days and regularly aggregates up to 1.06" (27mm) of precipitation.

When it does not snow?

In Somerset, snow does not fall in June through October.

How many hours of daylight does Somerset have in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:11 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:27 pm EDT.

How many hours of sunshine does Somerset have in September?

The average sunshine duration in September is 8.8h.

How high is the UV index in September?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Somerset, MA

Average temperature in September - Somerset, MA
  • Average high temperature in September: 72.1°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in September: 58.8°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in September
Somerset, MA

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

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Somerset, MA

Average wind speed in September - Somerset, MA
  • Average wind speed in September: 8.2mph

The windiest months (with the highest average wind speed) are January, February and March (10.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

Average humidity in September
Somerset, MA

Average humidity in September - Somerset, MA
  • Average humidity in September: 78%

The month with the highest relative humidity is June (80%).
The month with the lowest relative humidity is April (73%).

Average rainfall in September
Somerset, MA

Average rainfall in September - Somerset, MA
  • Average rainfall in September: 1.06"

The wettest month (with the highest rainfall) is October (1.97").
The driest month (with the least rainfall) is September (1.06").

Average rainfall days in September
Somerset, MA

Average rainfall days in September - Somerset, MA
  • Average rainfall days in September: 11.2 days

The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is February (6.9 days).

Average snowfall in September
Somerset, MA

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

The month with the highest snowfall is March (2.13").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in September
Somerset, MA

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

The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Somerset, 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 5min

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 54min).

Average sunshine days in September
Somerset, MA

Average sunshine days in September - Somerset, MA
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is April (13.6 days).

Average UV index in September
Somerset, MA

Average UV index in September - Somerset, 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 and December (UV index 2).

Average cloud cover in September
Somerset, MA

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

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in September
Somerset, MA

Average visibility in September - Somerset, 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).

Somerset, Massachusetts, USA

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