September weather forecastChester, VT
September
Weather in September
In September, Chester, Vermont, begins to feel the effects of the coming fall. The high temperatures drop to 69.4°F (20.8°C), and rainfall remains moderate at 1.85" (47mm). It is a period characterized by moderate weather conditions, with balanced daylight and daylight waning towards the end of the month. The modest temperatures and reducing daylight hours make September a transitional phase from summer to fall in Chester.Temperature
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a moderately hot 77.2°F (25.1°C) in August to an agreeable 69.4°F (20.8°C). In September, Chester reports a consistent average low-temperature of 49.6°F (9.8°C) during the nights.Humidity
In Chester, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.85" (47mm) of precipitation.Snowfall
June through September are months without snowfall in Chester.Daylight
The average length of the day in September in Chester is 12h and 29min.On the first day of September, sunrise is at 6:15 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:32 pm EDT.
Sunshine
In Chester, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Chester is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 3 during September translates into the following directions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chester, VT
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in September
Chester, VT
- 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 (29.92"Hg).
Average wind speed in September
Chester, VT
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Chester, VT
- Average humidity in September: 79%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in September
Chester, VT
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Chester, VT
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (9.2 days).
Average snowfall in September
Chester, VT
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Chester, VT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Chester, VT
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 36min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Chester, VT
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (10 days).
Average UV index in September
Chester, VT
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Chester, VT
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Chester, VT
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
