September weather forecastWeweantic, MA
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Weweantic, Massachusetts, with an average temperature fluctuating between 70°F (21.1°C) and 60.4°F (15.8°C).Temperature
As August makes way for September, Weweantic's average high-temperature eases from a moderately hot 76.6°F (24.8°C) to an agreeable 70°F (21.1°C). Throughout September, Weweantic experiences a low-temperature average of 60.4°F (15.8°C).Humidity
In Weweantic, the average relative humidity in September is 78%.Rainfall
In Weweantic, in September, it is raining for 10.6 days, with typically 1.06" (27mm) of accumulated precipitation. In Weweantic, during the entire year, the rain falls for 136.3 days and collects up to 15.63" (397mm) of precipitation.Snowfall
In Weweantic, snow does not fall in June through September.Ocean temperature
In Weweantic, the average seawater temperature in September is 65.8°F (18.8°C).Note: Most people find swimming in 65.8°F (18.8°C) unenjoyable. As the water temperature falls from 69.8°F (21°C) to 59°F (15°C), controlling one's breathing becomes harder.
Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:25 pm EDT.
Sunshine
In Weweantic, the average sunshine in September is 8.7h.UV index
In Weweantic, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Ensure safety - Sun damage prevention is strongly urged. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Weweantic, MA
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in September: 60.4°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in September
Weweantic, 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 (29.93"Hg).
Average wind speed in September
Weweantic, MA
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in September
Weweantic, MA
- Average humidity in September: 78%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in September
Weweantic, MA
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is October (1.89").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in September
Weweantic, MA
- Average rainfall days in September: 10.6 days
The months with the highest number of rainy days are May and July (14.1 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in September
Weweantic, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Weweantic, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Weweantic, MA
- Average sea temperature in September: 65.8°F
The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).
Average daylight in September /
Average sunshine in September
Weweantic, 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 12min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Weweantic, MA
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is December (17.7 days).
The month with the least sunshine days is April (14.3 days).
Average UV index in September
Weweantic, 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, November and December (UV index 2).
Average cloud cover in September
Weweantic, MA
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Weweantic, 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).
