Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May's arrival brings a temperature shift, moving from a fresh 51.1°F (10.6°C) in April to a comfortable 65.1°F (18.4°C). During May nights, Williamstown records an average temperature of 45.7°F (7.6°C).Humidity
The months with the lowest humidity are April and May, with an average relative humidity of 79%.Rainfall
The wettest months in Williamstown, New York, are May and October, with an average 3.66" (93mm) of rainfall.Snowfall
January through May, October through December are months with snowfall in Williamstown. May is the last month it regularly snows. During 0.3 snowfall days, in May, Williamstown aggregates 0.08" (2mm) of snow. Throughout the year, in Williamstown, New York, there are 88.5 snowfall days, and 46.89" (1191mm) of snow is accumulated.Daylight
In Williamstown, the average length of the day in May is 14h and 43min.On the first day of May, sunrise is at 5:55 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:37 pm EDT.
Sunshine
The average sunshine in May in Williamstown is 8.6h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In May, the UV index of 5 transforms into the following advice:
Exercise prevention - Warding off sunburn is urged. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What are the temperatures in Williamstown in May?
What are the least humid months in Williamstown?
What is the average humidity in May in Williamstown?
What is the rainiest month in Williamstown?
How many days does it rain in May in Williamstown?
What is the last month it snows in Williamstown?
How many hours of daylight does Williamstown have in May?
What time are sunrise and sunset in May in Williamstown?
How many hours of sunshine does Williamstown have in May?
What is the UV index reading in May in Williamstown?
Average temperature in May
Williamstown, NY
- Average high temperature in May: 65.1°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in May: 45.7°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in May
Williamstown, NY
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Williamstown, NY
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in May
Williamstown, NY
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in May
Williamstown, NY
- Average rainfall in May: 3.66"
The wettest months (with the highest rainfall) are May and October (3.66").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in May
Williamstown, NY
- Average rainfall days in May: 17.7 days
The month with the highest number of rainy days is October (18.5 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in May
Williamstown, NY
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (11.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Williamstown, NY
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (21.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Williamstown, NY
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 2h and 30min).
Average sunshine days in May
Williamstown, NY
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (4.6 days).
Average UV index in May
Williamstown, NY
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Williamstown, NY
- Average cloud cover in May: 45
The months with the most cloud cover are January and February (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Williamstown, NY
- Average visibility in May: 5mi
The months with the highest visibility are April and October (6mi).
The months with the lowest visibility are January and February (4mi).
Williamstown, New York, USA
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