September weather forecast
Sunderland, MA

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Weather in September

September, the first month of the autumn in Sunderland, is also an agreeable month, with temperature in the range of an average low of 52.2°F (11.2°C) and an average high of 71.4°F (21.9°C).

Temperature

Sunderland's progression into September involves a minor drop in the average high-temperature, slightly receding from a warm 79.2°F (26.2°C) in August to an agreeable 71.4°F (21.9°C). During the nights in September, Sunderland experiences a consistent average temperature of 52.2°F (11.2°C).

Humidity

The average relative humidity in September is 78%.

Rainfall

The month with the least rainfall in Sunderland, Massachusetts, is September, when the rain falls for 10 days and typically collects 1.69" (43mm) of precipitation.

Snowfall

June through September are months without snowfall in Sunderland.

Daylight

In September, the average length of the day in Sunderland, Massachusetts, is 12h and 29min.
On the first day of the month, sunrise is at 6:16 am and sunset at 7:24 pm. On the last day of September, in Sunderland, sunrise is at 6:47 am and sunset at 6:33 pm EDT.

Sunshine

In September, the average sunshine in Sunderland is 8.6h.

UV index

In September, the average daily maximum UV index in Sunderland, Massachusetts, is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high UV index of 4 in September translates into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

What is the usual temperature for Sunderland in September?

The high-temperature, in September, in Sunderland, is 71.4°F (21.9°C), while the low-temperature averages to 52.2°F (11.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in July is computed to be 86°F (30°C).

What is the average humidity in September in Sunderland?

In Sunderland, Massachusetts, the average relative humidity in September is 78%.

What is the driest month in Sunderland?

September is the month with the least rainfall. Rain falls for 10 days and accumulates 1.69" (43mm) of precipitation.

How many days does it rain in September in Sunderland?

In Sunderland, Massachusetts, in September, during 10 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

When it does not snow in Sunderland?

In Sunderland, snow does not fall in June through September.

Does it snow in Sunderland in September?

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

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

In Sunderland, Massachusetts, the average day length in September is 12h and 29min.

When is the sunrise / sunset in September in Sunderland?

In September, on the first day of the month, sunrise is at 6:16 am and sunset at 7:24 pm. On the last day of the month, in Sunderland, Massachusetts, sunrise is at 6:47 am and sunset at 6:33 pm EDT.

How long on average sun shines in September in Sunderland?

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

What is the UV index reading in September in Sunderland?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health risk from 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
Sunderland, MA

Average temperature in September - Sunderland, MA
  • Average high temperature in September: 71.4°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in September: 52.2°F

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in September
Sunderland, MA

Average pressure in September - Sunderland, MA
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Sunderland, MA

Average wind speed in September - Sunderland, MA
  • Average wind speed in September: 5.5mph

The windiest months (with the highest average wind speed) are January, February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in September
Sunderland, MA

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

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in September
Sunderland, MA

Average rainfall in September - Sunderland, MA
  • Average rainfall in September: 1.69"

The wettest month (with the highest rainfall) is December (3.07").
The driest month (with the least rainfall) is September (1.69").

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Average rainfall days in September
Sunderland, MA

Average rainfall days in September - Sunderland, MA
  • Average rainfall days in September: 10 days

The month with the highest number of rainy days is April (15.3 days).
The month with the least rainy days is February (8.9 days).

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Average snowfall in September
Sunderland, MA

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

The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Sunderland, MA

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

The month with the highest number of snowfall days is January (10 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Sunderland, 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 6min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in September
Sunderland, MA

Average sunshine days in September - Sunderland, MA
  • Average sunshine days in September: 17.1 days

The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is April (13.2 days).

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Average UV index in September
Sunderland, MA

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

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in September
Sunderland, MA

Average cloud cover in September - Sunderland, MA
  • Average cloud cover in September: 37

The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in September
Sunderland, MA

Average visibility in September - Sunderland, MA
  • Average visibility in September: 5mi

The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).

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Sunderland, Massachusetts, USA

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