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
The advent of September brings a slight shift in average high-temperature, moving from a moderately hot 77.5°F (25.3°C) in August to a pleasant 70.3°F (21.3°C). East Otis, in September, witnesses an average low-temperature of 51.4°F (10.8°C).Humidity
In September, the average relative humidity in East Otis is 80%.Rainfall
The month with the least rainfall in East Otis is September, when the rain falls for 13.5 days and typically collects 2.52" (64mm) of precipitation.Snowfall
In East Otis, snow does not fall in June through September.Daylight
In September, the average length of the day in East Otis is 12h and 28min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:25 pm. On the last day of September, in East Otis, Massachusetts, sunrise is at 6:48 am and sunset at 6:34 pm EDT.
Sunshine
In September, the average sunshine in East Otis is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 3 in September leads to these recommendations:
Act with care - The need to guard against sun damage is communicated. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
What are September temperatures in East Otis?
What is the average humidity in September in East Otis?
What is the driest month in East Otis?
How many days does it rain in September in East Otis?
When it does not snow in East Otis?
Does it snow in East Otis in September?
What is the average length of the day in September in East Otis?
What time are sunrise and sunset in September in East Otis?
How many hours of sunshine does East Otis have in September?
How high is the UV index in September in East Otis?
Average temperature in September
East Otis, MA
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 51.4°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in September
East Otis, MA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
East Otis, MA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
East Otis, MA
- Average humidity in September: 80%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
East Otis, MA
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is December (3.62").
The driest month (with the least rainfall) is September (2.52").
Average rainfall days in September
East Otis, MA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in September
East Otis, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
East Otis, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
East Otis, 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 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
East Otis, MA
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is November (14.8 days).
The month with the least sunshine days is February (9.9 days).
Average UV index in September
East Otis, MA
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
East Otis, MA
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in September
East Otis, MA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
East Otis, Massachusetts, USA
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