September weather forecast
New Salem, MA

Weather in September

The first month of the autumn, September, is still a pleasant month in New Salem, Massachusetts, with average temperature fluctuating between 52.2°F (11.2°C) and 71.2°F (21.8°C).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 78.4°F (25.8°C) in August, to a pleasant 71.2°F (21.8°C). In September, the average low-temperature is 52.2°F (11.2°C).

Humidity

In New Salem, the average relative humidity is 79%.

Rainfall

The month with the least rainfall in New Salem is September when the rain falls for 11.9 days and typically collects 1.77" (45mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in New Salem is 12.5h.

Sunshine

In September, the average sunshine is 8.4h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in September in New Salem?

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

What is the driest month in New Salem?

The month with the least rainfall is September when the rain falls for 11.9 days and typically collects 1.77" (45mm) of precipitation.

How much does it rain in New Salem in September?

In New Salem, during September, the rain falls for 11.9 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow in New Salem?

June through September are months without snowfall.

Does it snow in New Salem in September?

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

How many hours of daylight does New Salem have in September?

The average length of the day in September in New Salem is 12.5h.

How many hours of sunshine does New Salem have in September?

The average sunshine in September in New Salem, Massachusetts, is 8.4h.

What is the UV index intensity in September in New Salem?

The average daily maximum UV index in September in New Salem, Massachusetts, is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in September
New Salem, MA

Average temperature in September - New Salem, MA
  • Average high temperature in September: 71.2°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).

  • Average low temperature in September: 52.2°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in September
New Salem, MA

Average pressure in September - New Salem, MA
  • Average pressure in September: 30.06"

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

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Average wind speed in September
New Salem, MA

Average wind speed in September - New Salem, MA
  • Average wind speed in September: 5.6mph

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 (5.2mph).

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Average humidity in September
New Salem, MA

Average humidity in September - New Salem, MA
  • Average humidity in September: 79%

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
New Salem, MA

Average rainfall in September - New Salem, MA
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in September
New Salem, MA

Average rainfall days in September - New Salem, MA
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (7.4 days).

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Average snowfall in September
New Salem, MA

Average snowfall in September - New Salem, MA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (6.69").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
New Salem, MA

Average snowfall days in September - New Salem, MA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (10.5 days).
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
New Salem, MA

Average daylight in September / Average sunshine in September - New Salem, MA
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 8.4h

The month with the most sunshine is August (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.5h).

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Average sunshine days in September
New Salem, MA

Average sunshine days in September - New Salem, MA
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (13 days).

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Average UV index in September
New Salem, MA

Average UV index in September - New Salem, MA
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
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
New Salem, MA

Average cloud cover in September - New Salem, MA
  • Average cloud cover in September: 39

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
New Salem, MA

Average visibility in September - New Salem, MA
  • Average visibility in September: 5mi

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

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