September weather forecast
South Lee, MA

Share

Weather in September

September, the first month of the autumn in South Lee, is still a pleasant month, with an average temperature ranging between max 70.2°F (21.2°C) and min 50.9°F (10.5°C).

Temperature

South Lee's September weather features a light decline in high-temperatures, reducing from a warm 77.4°F (25.2°C) in August to an agreeable 70.2°F (21.2°C). The average low-temperature during September nights is a cool 50.9°F (10.5°C).

Humidity

The average relative humidity in September is 80%.

Rainfall

September is the month with the least rainfall. Rain falls for 7.4 days and accumulates 0.35" (9mm) of precipitation.

Snowfall

In South Lee, Massachusetts, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 6:19 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:35 pm EDT.

Sunshine

In South Lee, the average sunshine in September is 8.5h.

UV index

In South Lee, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 3 transforms into these recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The high-temperature, in September, in South Lee, records 70.2°F (21.2°C), while the low-temperature is 50.9°F (10.5°C).

What is the average humidity in September?

The average relative humidity in September is 80%.

What is the driest month in South Lee?

The month with the least rainfall is September, when the rain falls for 7.4 days and typically collects 0.35" (9mm) of precipitation.

How many days does it rain in September?

In South Lee, in September, during 7.4 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:19 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:35 pm EDT.

How many hours of sunshine does South Lee have in September?

In September, the average sunshine duration is 8.5h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 3. 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
South Lee, MA

Average temperature in September - South Lee, MA
  • Average high temperature in September: 70.2°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 (28°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

Average pressure in September
South Lee, MA

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

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in September
South Lee, MA

Average wind speed in September - South Lee, MA
  • Average wind speed in September: 5.7mph

The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in September
South Lee, MA

Average humidity in September - South Lee, MA
  • Average humidity in September: 80%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September
South Lee, MA

Average rainfall in September - South Lee, MA
  • Average rainfall in September: 0.35"

The wettest month (with the highest rainfall) is July (0.83").
The driest month (with the least rainfall) is September (0.35").

Average rainfall days in September
South Lee, MA

Average rainfall days in September - South Lee, MA
  • Average rainfall days in September: 7.4 days

The month with the highest number of rainy days is July (11 days).
The month with the least rainy days is January (3.6 days).

Average snowfall in September
South Lee, MA

Average snowfall in September - South Lee, MA
  • Average snowfall in September: 0"

The month with the highest snowfall is December (1.34").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
South Lee, MA

Average snowfall days in September - South Lee, MA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
South Lee, MA

Average daylight in September / Average sunshine in September - South Lee, 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 3min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

Average sunshine days in September
South Lee, MA

Average sunshine days in September - South Lee, MA
  • Average sunshine days in September: 20.5 days

The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is June (17.1 days).

Average UV index in September
South Lee, MA

Average UV index in September - South Lee, MA
  • Average UV index in September: 3

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).

Average cloud cover in September
South Lee, MA

Average cloud cover in September - South Lee, MA
  • Average cloud cover in September: 40

The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 37).

Average visibility in September
South Lee, MA

Average visibility in September - South Lee, MA
  • Average visibility in September: 5mi

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

South Lee, Massachusetts, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location