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
As May begins, there is a noticeable increase in the average high-temperature, soaring from a frosty 48.2°F (9°C) in April to an enjoyable 63.7°F (17.6°C). The low-temperature average for Williamstown during May stands at a chilly 43.2°F (6.2°C).Humidity
With an average relative humidity of 76%, May is the least humid month in Williamstown.Rainfall
In Williamstown, during May, the rain falls for 17.8 days and regularly aggregates up to 2.99" (76mm) of precipitation. Throughout the year, there are 166.6 rainfall days, and 32.01" (813mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 1 snowfall days, in May, Williamstown aggregates 1.14" (29mm) of snow. Throughout the year, there are 107.7 snowfall days, and 58.82" (1494mm) of snow is accumulated.Daylight
In Williamstown, Vermont, the average length of the day in May is 14h and 47min.On the first day of the month, sunrise is at 5:40 am and sunset at 7:54 pm. On the last day of May, in Williamstown, sunrise is at 5:09 am and sunset at 8:26 pm EDT.
Sunshine
The average sunshine in May is 7.7h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during May leads to these instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the least humid month?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Williamstown have in May?
When are sunrise and sunset in May?
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, VT
- Average high temperature in May: 63.7°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in May: 43.2°F
The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in May
Williamstown, VT
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Williamstown, VT
- Average wind speed in May: 6.4mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Williamstown, VT
- Average humidity in May: 76%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).
Average rainfall in May
Williamstown, VT
- Average rainfall in May: 2.99"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in May
Williamstown, VT
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in May
Williamstown, VT
- Average snowfall in May: 1.14"
The month with the highest snowfall is February (13.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Williamstown, VT
- Average snowfall days in May: 1 days
The month with the highest number of snowfall days is January (22.3 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, VT
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The months with the least sunshine are January and February (Average sunshine: 2h and 42min).
Average sunshine days in May
Williamstown, VT
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (5.5 days).
Average UV index in May
Williamstown, VT
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Williamstown, VT
- Average cloud cover in May: 51
The months with the most cloud cover are January and February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in May
Williamstown, VT
- Average visibility in May: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
Williamstown, Vermont, USA
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