September weather forecastMarshfield, MA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Marshfield, Massachusetts, with temperature in the range of an average high of 69.3°F (20.7°C) and an average low of 59.9°F (15.5°C).Temperature
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a moderately hot 75.7°F (24.3°C) to a pleasant 69.3°F (20.7°C). Marshfield usually reports an average low-temperature of 59.9°F (15.5°C) during the month of September.Humidity
In Marshfield, the average relative humidity in September is 78%.Rainfall
In Marshfield, Massachusetts, in September, during 10.1 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, there are 120.2 rainfall days, and 12.24" (311mm) of precipitation is accumulated.Snowfall
In Marshfield, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:09 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:25 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Marshfield, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Make use of precautions - It is urged to ward off sun damage. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. 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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Marshfield, MA
- Average high temperature in September: 69.3°F
The warmest months (with the highest average high temperature) are July and August (75.7°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in September: 59.9°F
The months with the highest average low temperature are July and August (65.8°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in September
Marshfield, 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
Marshfield, MA
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in September
Marshfield, 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
Marshfield, MA
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in September
Marshfield, MA
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Marshfield, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Marshfield, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6 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
Marshfield, 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 36min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in September
Marshfield, MA
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is December (18.9 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in September
Marshfield, 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
Marshfield, 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 29).
Average visibility in September
Marshfield, 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).
