September weather forecastWaterville, VT
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Waterville, Vermont, with an average temperature varying between 48°F (8.9°C) and 68.2°F (20.1°C).Temperature
The start of September comes with a small reduction in the average high-temperature, subtly receding from a moderately hot 75.2°F (24°C) in August to a pleasant 68.2°F (20.1°C). Waterville records an average temperature drop to a chilly 48°F (8.9°C) in September.Humidity
The average relative humidity in September is 81%.Rainfall
September is the month with the least rainfall. Rain falls for 13.4 days and accumulates 2.2" (56mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:14 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:33 pm EDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Waterville, VT
- Average high temperature in September: 68.2°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in September: 48°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Waterville, VT
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Waterville, VT
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Waterville, VT
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Waterville, VT
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
Waterville, VT
- Average rainfall days in September: 13.4 days
The months with the highest number of rainy days are June and July (18.6 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Waterville, VT
- Average snowfall in September: 0"
The month with the highest snowfall is January (14.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Waterville, VT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (22.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Waterville, VT
- Average daylight in September: 12h and 30min
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 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: 2h and 30min).
Average sunshine days in September
Waterville, VT
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in September
Waterville, VT
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Waterville, VT
- Average cloud cover in September: 40
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 37).
Average visibility in September
Waterville, VT
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
