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
In Saint Johnsbury, the average high-temperature in May significantly increases from a chilly 47.5°F (8.6°C) in April to a comfortable 63.7°F (17.6°C). In the face of high daytime temperatures, Saint Johnsbury witnesses a consistent average nighttime low of 42.1°F (5.6°C) during May.Humidity
May is the least humid month, with an average relative humidity of 76%.Rainfall
In Saint Johnsbury, in May, it is raining for 16.8 days, with typically 2.56" (65mm) of accumulated precipitation. Throughout the year, there are 157.2 rainfall days, and 28.35" (720mm) of precipitation is accumulated.Snowfall
Months with snowfall in Saint Johnsbury are January through May, October through December. May is the last month it regularly snows. During 0.7 snowfall days, in May, Saint Johnsbury aggregates 0.63" (16mm) of snow. Throughout the year, there are 98.4 snowfall days, and 51.97" (1320mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 49min.On the first day of May, sunrise is at 5:37 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:06 am and sunset at 8:25 pm EDT.
Sunshine
In Saint Johnsbury, Vermont, the average sunshine in May is 8h.UV index
The average daily maximum UV index in May in Saint Johnsbury is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In May, a daily UV index of 4 turns into the following recommendations:
Act with care - The need to guard against sun damage is communicated. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What is the average May temperature in Saint Johnsbury?
What is the least humid month in Saint Johnsbury?
What is the average humidity in May in Saint Johnsbury?
How much does it rain in Saint Johnsbury in May?
What is the last month it snows in Saint Johnsbury?
How many hours of daylight does Saint Johnsbury have in May?
When is the sunrise / sunset in May in Saint Johnsbury?
How long on average sun shines in May in Saint Johnsbury?
What is the UV index intensity in May in Saint Johnsbury?
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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