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
September brings a slight decrease in temperature, down from a warm 76.6°F (24.8°C) in August to an agreeable 70.2°F (21.2°C). During September, Plympton's temperature falls to a steady low-temperature average of 59.7°F (15.4°C).Humidity
In Plympton, the average relative humidity in September is 78%.Rainfall
In Plympton, in September, during 11 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In Plympton, during the entire year, the rain falls for 132.2 days and collects up to 16.3" (414mm) of precipitation.Snowfall
In Plympton, 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 in Plympton, 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 6:26 pm EDT.
Sunshine
In Plympton, the average sunshine in September is 8.6h.UV index
In Plympton, 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 unsafe exposure to UV radiation for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What is the usual temperature for Plympton in September?
What is the average humidity in September in Plympton?
How many days does it rain in September in Plympton?
When it does not snow in Plympton?
What is the average length of the day in September in Plympton?
What time are sunrise and sunset in September in Plympton?
How many hours of sunshine does Plympton have in September?
What is the UV index intensity in September in Plympton?
Average temperature in September
Plympton, MA
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Plympton, 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
Plympton, MA
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is January (12.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in September
Plympton, MA
- Average humidity in September: 78%
The month with the highest relative humidity is July (80%).
The months with the lowest relative humidity are March, April and November (74%).
Average rainfall in September
Plympton, MA
- Average rainfall in September: 1.1"
The wettest months (with the highest rainfall) are July and October (1.65").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in September
Plympton, MA
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in September
Plympton, MA
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Plympton, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.1 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
Plympton, 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 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in September
Plympton, MA
- Average sunshine days in September: 17 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in September
Plympton, 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
Plympton, 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
Plympton, 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).
Plympton, Massachusetts, USA
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