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
A minor decrease in the average high-temperature is observed during September, shifting from a warm 80.6°F (27°C) in August to a pleasant 73°F (22.8°C). Brookfield experiences a mean low-temperature of 55°F (12.8°C) during September.Humidity
In Brookfield, Connecticut, the average relative humidity in September is 79%.Rainfall
In Brookfield, in September, it is raining for 13.6 days, with typically 2.44" (62mm) of accumulated precipitation. In Brookfield, Connecticut, during the entire year, the rain falls for 166.1 days and collects up to 36.3" (922mm) of precipitation.Snowfall
In Brookfield, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:36 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Act with care - The need to guard against sun damage is communicated. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Brookfield have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Brookfield have in September?
How high is the UV index in September?
Average temperature in September
Brookfield, CT
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Brookfield, 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
Brookfield, CT
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January and March (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Brookfield, CT
- Average humidity in September: 79%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Brookfield, CT
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is July (3.82").
The driest month (with the least rainfall) is January (2.24").
Average rainfall days in September
Brookfield, CT
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Brookfield, CT
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brookfield, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brookfield, CT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Brookfield, CT
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is January (17 days).
The months with the least sunshine days are June and July (10.3 days).
Average UV index in September
Brookfield, CT
- Average UV index in September: 4
The months with the highest UV index are June 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
Brookfield, CT
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Brookfield, CT
- Average visibility in September: 5mi
The months with the highest visibility are March, April, October, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August and September (5mi).
Brookfield, Connecticut, USA
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