September weather forecastAmesbury, MA
September
Weather in September
September, the first month of the autumn in Amesbury, is also an agreeable month, with an average temperature fluctuating between 69.6°F (20.9°C) and 56.8°F (13.8°C).Temperature
The transition into September subtly indicates a reduction in the average high-temperature, down to a pleasant 69.6°F (20.9°C) from August's warm 76.6°F (24.8°C). In the month of September, the temperature generally rests at an average low of 56.8°F (13.8°C).Humidity
In Amesbury, the average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.38" (35mm) of precipitation.Snowfall
In Amesbury, snow does not fall in May through September.Daylight
In Amesbury, 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 September, the average sunshine is 8.6h.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 unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the UV index of 4 transforms into the following advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Amesbury, MA
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (32.7°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Amesbury, 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
Amesbury, MA
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Amesbury, MA
- Average humidity in September: 77%
The months with the highest relative humidity are February, June and July (78%).
The months with the lowest relative humidity are April and November (74%).
Average rainfall in September
Amesbury, MA
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in September
Amesbury, MA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Amesbury, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Amesbury, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Amesbury, MA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Amesbury, MA
- Average sunshine days in September: 17 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in September
Amesbury, 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
Amesbury, MA
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Amesbury, 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).
