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's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 81°F (27.2°C) in August to a still warm 73.8°F (23.2°C). The average low-temperature in Thompsonville during September nights is a cool 54.5°F (12.5°C).Humidity
The average relative humidity in September in Thompsonville is 77%.Rainfall
September is the month with the least rainfall in Thompsonville. Rain falls for 11.9 days and accumulates 1.57" (40mm) of precipitation.Snowfall
In Thompsonville, snow does not fall in June through September.Daylight
The average length of the day in September in Thompsonville is 12h and 28min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:23 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:33 pm EDT.
Sunshine
In September, the average sunshine in Thompsonville is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What is the usual temperature for Thompsonville in September?
What is the average humidity in September in Thompsonville?
What is the driest month in Thompsonville?
How much does it rain in Thompsonville in September?
When it does not snow in Thompsonville?
Does it snow in Thompsonville in September?
How many hours of daylight does Thompsonville have in September?
When is the sunrise / sunset in September in Thompsonville?
How many hours of sunshine does Thompsonville have in September?
What is the UV index reading in September in Thompsonville?
Average temperature in September
Thompsonville, CT
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Thompsonville, CT
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Thompsonville, CT
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Thompsonville, CT
- Average humidity in September: 77%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Thompsonville, CT
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is December (3.03").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Thompsonville, CT
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in September
Thompsonville, CT
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Thompsonville, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Thompsonville, CT
- 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: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Thompsonville, CT
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (12 days).
Average UV index in September
Thompsonville, CT
- 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
Thompsonville, CT
- Average cloud cover in September: 39
The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Thompsonville, CT
- Average visibility in September: 5mi
The months with the highest visibility are April, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August and September (5mi).
Thompsonville, Connecticut, USA
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