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 is marked by an increase in the average high-temperature, moving from a cool 51.4°F (10.8°C) in April to an enjoyable 65.5°F (18.6°C). The low-temperature in Grafton averages to a chilly 45°F (7.2°C) during the nights of May.Humidity
The months with the lowest humidity in Grafton are April and May, with an average relative humidity of 75%.Rainfall
In Grafton, in May, it is raining for 16.8 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 164.2 rainfall days, and 27.01" (686mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Grafton, Vermont. May is the last month it regularly snows in Grafton. During 0.4 snowfall days, in May, Grafton aggregates 0.35" (9mm) of snow. Throughout the year, in Grafton, Vermont, there are 58.9 snowfall days, and 32.32" (821mm) of snow is accumulated.Daylight
The average length of the day in May in Grafton, Vermont, is 14h and 41min.On the first day of the month, sunrise is at 5:42 am and sunset at 7:52 pm. On the last day of May, in Grafton, sunrise is at 5:13 am and sunset at 8:23 pm EDT.
Sunshine
The average sunshine in May in Grafton is 8.6h.UV index
The months with the highest UV index in Grafton are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 5 in May translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What are the temperatures in Grafton in May?
What are the least humid months in Grafton?
What is the average humidity in May in Grafton?
How much does it rain in Grafton in May?
What is the last month it snows in Grafton?
What is the average length of the day in May in Grafton?
When are sunrise and sunset in May in Grafton?
How long on average sun shines in May in Grafton?
When is the highest UV index in Grafton?
How high is the UV index in May in Grafton?
Average temperature in May
Grafton, VT
- Average high temperature in May: 65.5°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in May: 45°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in May
Grafton, VT
- Average pressure in May: 29.99"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 May
Grafton, VT
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Grafton, VT
- Average humidity in May: 75%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in May
Grafton, VT
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in May
Grafton, VT
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (9.2 days).
Average snowfall in May
Grafton, VT
- Average snowfall in May: 0.35"
The month with the highest snowfall is February (9.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grafton, VT
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is February (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grafton, VT
- Average daylight in May: 14h and 4min
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 May: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in May
Grafton, VT
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (10 days).
Average UV index in May
Grafton, VT
- Average UV index in May: 5
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 May
Grafton, VT
- Average cloud cover in May: 46
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Grafton, VT
- Average visibility in May: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Grafton, Vermont, USA
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