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
The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's moderately hot 77.7°F (25.4°C) to an agreeable 71.4°F (21.9°C). During the nights in September, the temperature averages to a refreshing 59.9°F (15.5°C).Humidity
In September, the average relative humidity in West Mystic is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 1.73" (44mm) of precipitation.Snowfall
In West Mystic, snow does not fall in June through October.Daylight
In September, the average length of the day in West Mystic is 12h and 28min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:20 pm. On the last day of September, in West Mystic, sunrise is at 6:44 am and sunset at 6:31 pm EDT.
Sunshine
In September, the average sunshine in West Mystic is 8.9h.UV index
The average daily maximum UV index in September in West Mystic is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
What is the temperature in September in West Mystic?
What is the average humidity in September in West Mystic?
What is the driest month in West Mystic?
How many days does it rain in September in West Mystic?
When it does not snow in West Mystic?
What is the average length of the day in September in West Mystic?
When is the sunrise / sunset in September in West Mystic?
How many hours of sunshine does West Mystic have in September?
What is the UV index reading in September in West Mystic?
Average temperature in September
West Mystic, CT
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in September
West Mystic, CT
- Average pressure in September: 30.05"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
West Mystic, CT
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in September
West Mystic, CT
- Average humidity in September: 78%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in September
West Mystic, CT
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
West Mystic, CT
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in September
West Mystic, CT
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
West Mystic, CT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
West Mystic, 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 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
West Mystic, CT
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in September
West Mystic, 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
West Mystic, CT
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
West Mystic, CT
- 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).
West Mystic, Connecticut, USA
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