Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
South Orleans, Massachusetts, marks the start of September with an average high-temperature of a comfortable 66.6°F (19.2°C), hinting at a slight fluctuation from August's 71.4°F (21.9°C). Nighttime temperatures during September report a consistent average of 62.4°F (16.9°C).Humidity
In South Orleans, the average relative humidity in September is 80%.Rainfall
In South Orleans, during September, the rain falls for 5.5 days and regularly aggregates up to 0.47" (12mm) of precipitation. In South Orleans, Massachusetts, during the entire year, the rain falls for 78.2 days and collects up to 5.75" (146mm) of precipitation.Snowfall
In South Orleans, snow does not fall in April through October.Daylight
The average length of the day in September in South Orleans, Massachusetts, is 12h and 28min.On the first day of September, sunrise is at 6:06 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:22 pm EDT.
Sunshine
In September, the average sunshine in South Orleans is 8.6h.UV index
In September, the average daily maximum UV index in South Orleans, Massachusetts, is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests this advice:
Prioritize safety - Recommendations to avert sunburn are shared. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What are September temperatures in South Orleans?
What is the average humidity in September in South Orleans?
How much does it rain in South Orleans in September?
When it does not snow in South Orleans?
How many hours of daylight does South Orleans have in September?
When are sunrise and sunset in September in South Orleans?
How long on average sun shines in September in South Orleans?
What is the UV index intensity in September in South Orleans?
Average temperature in September
South Orleans, MA
- Average high temperature in September: 66.6°F
The warmest month (with the highest average high temperature) is August (71.4°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 62.4°F
The month with the highest average low temperature is August (67.8°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
South Orleans, 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
South Orleans, MA
- Average wind speed in September: 13.4mph
The windiest month (with the highest average wind speed) is January (18.3mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).
Average humidity in September
South Orleans, MA
- Average humidity in September: 80%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (74%).
Average rainfall in September
South Orleans, MA
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is October (0.87").
The driest months (with the least rainfall) are July and August (0.28").
Average rainfall days in September
South Orleans, MA
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is April (8.2 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
South Orleans, MA
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
South Orleans, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
South Orleans, 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 12min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in September
South Orleans, MA
- Average sunshine days in September: 23.4 days
The month with the most sunshine days is September (23.4 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in September
South Orleans, 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
South Orleans, MA
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
South Orleans, 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).
South Orleans, Massachusetts, USA
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