Cool
Average highs are around 20°C, so pack for cooler days.
May verdict
Williamstown, Massachusetts, United States in May
Weather score41Mixed
Mixed for holiday weather
Average highs are around 20°C, so pack for cooler days. Sunshine averages 7.9h per day, enough for a balanced month. Rainfall averages 105mm, so some wet days are possible.
May weather
Monthly averages
Temp
20°C
Rain
105mm
Sun
7.9h
Weather score
41
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 105mm, so some wet days are possible.
Some sun
Sunshine averages 7.9h per day, enough for a balanced month.
Map
Weather map
Compare Williamstown, Massachusetts, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May20°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
May105mm average rain
May is one of Williamstown's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to July and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May7.9 hours average sun
May is brighter than Williamstown's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
May41 weather score
May sits close to Williamstown'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.
