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
The rise of average high-temperatures is noticeable in May, with an increase from a frosty 47.5°F (8.6°C) in April to an enjoyable 63.7°F (17.6°C). In May, a remarkable difference from daytime highs is noted, as Saint Johnsbury records an average temperature of 42.1°F (5.6°C) during the night.Humidity
May is the least humid month, with an average relative humidity of 76%.Rainfall
In Saint Johnsbury, in May, during 16.8 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Saint Johnsbury, during the entire year, the rain falls for 157.2 days and collects up to 28.35" (720mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.7 snowfall days, in May, Saint Johnsbury aggregates 0.63" (16mm) of snow. In Saint Johnsbury, Vermont, during the entire year, snow falls for 98.4 days and aggregates up to 51.97" (1320mm) of snow.Daylight
In May, the average length of the day is 14h and 49min.On the first day of the month, sunrise is at 5:37 am and sunset at 7:52 pm. On the last day of May, sunrise is at 5:06 am and sunset at 8:25 pm EDT.
Sunshine
The average sunshine in May is 8h.UV index
In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 4 in May interprets into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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 in Saint Johnsbury?
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 Saint Johnsbury have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Saint Johnsbury, VT
- Average high temperature in May: 63.7°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in May: 42.1°F
The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in May
Saint Johnsbury, VT
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Saint Johnsbury, VT
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in May
Saint Johnsbury, 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
Saint Johnsbury, VT
- Average rainfall in May: 2.56"
The wettest months (with the highest rainfall) are June and October (2.87").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in May
Saint Johnsbury, VT
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in May
Saint Johnsbury, VT
- Average snowfall in May: 0.63"
The month with the highest snowfall is January (12.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Saint Johnsbury, VT
- Average snowfall days in May: 0.7 days
The month with the highest number of snowfall days is February (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Saint Johnsbury, VT
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 8h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in May
Saint Johnsbury, VT
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (6.6 days).
Average UV index in May
Saint Johnsbury, 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 and December (UV index 1).
Average cloud cover in May
Saint Johnsbury, VT
- Average cloud cover in May: 50
The month with the most cloud cover is February (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in May
Saint Johnsbury, 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).
Saint Johnsbury, Vermont, USA
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