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
Simsbury's progression into September involves a minor drop in the average high-temperature, slightly receding from a moderately hot 80.2°F (26.8°C) in August to a pleasant 72.9°F (22.7°C). In the month of September, Simsbury experiences an average low-temperature of 54.7°F (12.6°C).Humidity
In September, the average relative humidity is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 12.6 days and accumulates 1.97" (50mm) of precipitation.Snowfall
In Simsbury, snow does not fall in June through September.Daylight
In September, the average length of the day in Simsbury is 12h and 28min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:24 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:34 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September in Simsbury is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Simsbury?
What is the average humidity in September in Simsbury?
What is the driest month in Simsbury?
How many days does it rain in September in Simsbury?
When it does not snow in Simsbury?
Does it snow in Simsbury in September?
What is the average length of the day in September in Simsbury?
When are sunrise and sunset in September in Simsbury?
How many hours of sunshine does Simsbury have in September?
How high is the UV index in September in Simsbury?
Average temperature in September
Simsbury, CT
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Simsbury, CT
- 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
Simsbury, CT
- Average wind speed in September: 5.8mph
The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Simsbury, 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
Simsbury, CT
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Simsbury, CT
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in September
Simsbury, CT
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Simsbury, 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
Simsbury, 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 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Simsbury, CT
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is January (17.1 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in September
Simsbury, CT
- Average UV index in September: 4
The months with the highest UV index are June and July (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
Simsbury, CT
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Simsbury, 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).
Simsbury, Connecticut, USA
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