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 brings a slight decrease in the average high-temperature, shifting from a moderately hot 74.3°F (23.5°C) in August to a comfortable 67.5°F (19.7°C). In September, East Calais encounters an average low-temperature of 48.2°F (9°C) during the night.Humidity
In East Calais, the average relative humidity in September is 81%.Rainfall
September is the month with the least rainfall. Rain falls for 6 days and accumulates 0.31" (8mm) of precipitation.Snowfall
In East Calais, Vermont, snow does not fall in June through September.Daylight
In East Calais, the average length of the day in September is 12h and 30min.On the first day of September in East Calais, sunrise is at 6:13 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:31 pm EDT.
Sunshine
The average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Exercise prevention - Protecting skin and eyes from harm is required. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does East Calais have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
East Calais, VT
- Average high temperature in September: 67.5°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in September: 48.2°F
The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
East Calais, VT
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
East Calais, VT
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
East Calais, VT
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
East Calais, VT
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is October (0.63").
The driest month (with the least rainfall) is September (0.31").
Average rainfall days in September
East Calais, VT
- Average rainfall days in September: 6 days
The month with the highest number of rainy days is July (9.3 days).
The month with the least rainy days is February (2 days).
Average snowfall in September
East Calais, VT
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
East Calais, VT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
East Calais, VT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The months with the least sunshine are January and February (Average sunshine: 2h and 30min).
Average sunshine days in September
East Calais, VT
- Average sunshine days in September: 22 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (17.6 days).
Average UV index in September
East Calais, VT
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
East Calais, VT
- Average cloud cover in September: 42
The months with the most cloud cover are January and February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in September
East Calais, VT
- Average visibility in September: 4mi
The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).
East Calais, Vermont, USA
Weather forecast for your location
2. Allow the app to use your location