Mild
Average highs are around 21°C, so days are mild rather than hot.
September verdict
Williston, Vermont, United States in September
Weather score49Mixed
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 6.5h per day, enough for a balanced month. Rainfall averages 77mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
21°C
Rain
77mm
Sun
6.5h
Weather score
49
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 77mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.5h per day, enough for a balanced month.
Map
Weather map
Compare Williston, Vermont, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September21°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
September77mm average rain
September is wetter than Williston's yearly average, so flexible plans matter more.
Driest monthsJanuary to April, October, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September6.5 hours average sun
September sits close to Williston's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September49 weather score
September sits close to Williston's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
