September weather forecastWest Brattleboro, VT
September
Weather in September
Considered the gateway to autumn, September in West Brattleboro, Vermont experiences decreasing temperatures, down to average lows of 50.9°F (10.5°C). The city starts its shift towards cooler days with daylight hours dropping to an average of 12.5 hours. Weather fluctuations are common this month, with a marked decrease in rainfall. Ecologically, September marks the start of fall foliage, turning the city into a canvas of vibrant colors. Despite the shorter days, the still pleasant weather and picturesque surroundings make outdoor activities very appealing.Temperature
September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 77.9°F (25.5°C) in August to a pleasant 70.2°F (21.2°C). An average minimum temperature of 50.9°F (10.5°C) is recorded during the month of September.Humidity
The average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall in West Brattleboro. Rain falls for 6.8 days and accumulates 0.43" (11mm) of precipitation.Snowfall
In West Brattleboro, snow does not fall in May through September.Daylight
In September, the average length of the day 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 West Brattleboro, the average sunshine in September is 8.6h.UV index
In West Brattleboro, the average daily maximum UV index in September is 4. 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 daily UV index, 4 in September, converts into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
West Brattleboro, VT
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
West Brattleboro, VT
- Average pressure in September: 30.06"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
West Brattleboro, VT
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
West Brattleboro, VT
- Average humidity in September: 79%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
West Brattleboro, VT
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is November (0.87").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in September
West Brattleboro, VT
- Average rainfall days in September: 6.8 days
The month with the highest number of rainy days is May (10 days).
The months with the least rainy days are January and February (4.3 days).
Average snowfall in September
West Brattleboro, VT
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
West Brattleboro, VT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
West Brattleboro, 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 6min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
West Brattleboro, VT
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is July (17.6 days).
Average UV index in September
West Brattleboro, VT
- Average UV index in September: 4
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
West Brattleboro, VT
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
West Brattleboro, VT
- 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).
