September weather forecastSalmon Brook, CT
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Salmon Brook, Connecticut, with an average temperature ranging between max 72.3°F (22.4°C) and min 52.9°F (11.6°C).Temperature
Salmon Brook's transition into September involves a gentle shift in temperature, receding from a moderately hot 79.7°F (26.5°C) in August to a pleasant 72.3°F (22.4°C). Nightly temperatures drop to an average low of 52.9°F (11.6°C) in September.Humidity
In Salmon Brook, Connecticut, the average relative humidity in September is 79%.Rainfall
The month with the least rainfall in Salmon Brook is September, when the rain falls for 13.5 days and typically collects 2.17" (55mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Salmon Brook 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 Salmon Brook, the average sunshine in September is 8.3h.UV index
In Salmon Brook, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Salmon Brook, CT
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Salmon Brook, 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
Salmon Brook, CT
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Salmon Brook, CT
- Average humidity in September: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Salmon Brook, CT
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in September
Salmon Brook, CT
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in September
Salmon Brook, CT
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Salmon Brook, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Salmon Brook, CT
- Average daylight in September: 12h and 30min
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 18min
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: 4h and 18min).
Average sunshine days in September
Salmon Brook, CT
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is January (16.6 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Salmon Brook, CT
- Average UV index in September: 4
The month with the highest UV index is June (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
Salmon Brook, CT
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Salmon Brook, CT
- Average visibility in September: 5mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
