September weather forecastMarblehead, MA
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Marblehead, Massachusetts, with an average temperature ranging between max 70.9°F (21.6°C) and min 58.5°F (14.7°C).Temperature
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 78.4°F (25.8°C) in August to a pleasant 70.9°F (21.6°C). September nights are marked by an average temperature drop to a refreshing 58.5°F (14.7°C).Humidity
The average relative humidity in September in Marblehead is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 11.3 days and accumulates 1.46" (37mm) of precipitation.Snowfall
In Marblehead, snow does not fall in May through September.Ocean temperature
In Marblehead, the average seawater temperature in September is 62.6°F (17°C).Note: For the majority of people, swimming in water at 62.6°F (17°C) is not enjoyable. The challenge of controlling breathing escalates as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
In Marblehead, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:26 pm EDT.
Sunshine
In Marblehead, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Marblehead, MA
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in September
Marblehead, 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 (29.92"Hg).
Average wind speed in September
Marblehead, MA
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Marblehead, MA
- Average humidity in September: 75%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Marblehead, MA
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is December (3.03").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in September
Marblehead, MA
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Marblehead, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Marblehead, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in September
Marblehead, MA
- Average sea temperature in September: 62.7°F
The best month for swimming (with the highest average sea temperature) is August (66.4°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight in September /
Average sunshine in September
Marblehead, MA
- Average daylight in September: 12h and 30min
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 18min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in September
Marblehead, MA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is April (13.3 days).
Average UV index in September
Marblehead, 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).
Average cloud cover in September
Marblehead, MA
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Marblehead, 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).
