May weather forecast
New Haven, VT

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Weather in May

May, the last month of the spring in New Haven, is a comfortable month, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 64.9°F (18.3°C).

Temperature

A noticeable upsurge in temperatures is seen as April gives way to May, with average highs moving from a chilly 49.6°F (9.8°C) to a refreshing 64.9°F (18.3°C). May witnesses an average nighttime temperature of 44.2°F (6.8°C).

Humidity

The months with the lowest humidity are April and May, with an average relative humidity of 76%.

Rainfall

In New Haven, during May, the rain falls for 18.2 days and regularly aggregates up to 3.19" (81mm) of precipitation. Throughout the year, there are 175.7 rainfall days, and 30.47" (774mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.8 snowfall days, in May, New Haven aggregates 0.71" (18mm) of snow. In New Haven, Vermont, during the entire year, snow falls for 96 days and aggregates up to 49.8" (1265mm) of snow.

Daylight

In New Haven, the average length of the day in May is 14h and 47min.
On the first day of May, sunrise is at 5:42 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:12 am and sunset at 8:28 pm EDT.

Sunshine

The average sunshine in May is 8.2h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, a daily UV index of 5 turns into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

An average high-temperature, in May, in New Haven, is 64.9°F (18.3°C) and the average low-temperature is 44.2°F (6.8°C).

What is the least humid month?

April and May, with an average relative humidity of 76%, are the least humid months.

What is the average humidity in May?

The average relative humidity in May in New Haven is 76%.

How much does it rain in May?

In New Haven, in May, during 18.2 rainfall days, 3.19" (81mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows in New Haven. During 0.8 snowfall days, in May, New Haven aggregates 0.71" (18mm) of snow.

How many hours of daylight does New Haven have in May?

In New Haven, the average day length in May is 14h and 47min.

What time are sunrise and sunset in May in New Haven?

On the first day of May, sunrise is at 5:42 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:12 am and sunset at 8:28 pm EDT.

How long on average sun shines in May?

The average sunshine duration in May is 8.2h.

What are the months with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

What is the UV index reading in May?

In May, the average daily maximum UV index in New Haven is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
New Haven, VT

Average temperature in May - New Haven, VT
  • Average high temperature in May: 64.9°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (24.1°F).

  • Average low temperature in May: 44.2°F

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

Average pressure in May
New Haven, VT

Average pressure in May - New Haven, 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
New Haven, VT

Average wind speed in May - New Haven, VT
  • Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in May
New Haven, VT

Average humidity in May - New Haven, VT
  • Average humidity in May: 76%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (76%).

Average rainfall in May
New Haven, VT

Average rainfall in May - New Haven, VT
  • Average rainfall in May: 3.19"

The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in May
New Haven, VT

Average rainfall days in May - New Haven, VT
  • Average rainfall days in May: 18.2 days

The month with the highest number of rainy days is June (19.2 days).
The month with the least rainy days is January (8.7 days).

Average snowfall in May
New Haven, VT

Average snowfall in May - New Haven, VT
  • Average snowfall in May: 0.71"

The month with the highest snowfall is February (11.06").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
New Haven, VT

Average snowfall days in May - New Haven, VT
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is January (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
New Haven, VT

Average daylight in May / Average sunshine in May - New Haven, 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: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).

Average sunshine days in May
New Haven, VT

Average sunshine days in May - New Haven, VT
  • Average sunshine days in May: 10.9 days

The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (5.7 days).

Average UV index in May
New Haven, VT

Average UV index in May - New Haven, VT
  • Average UV index in May: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in May
New Haven, VT

Average cloud cover in May - New Haven, VT
  • Average cloud cover in May: 48

The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in May
New Haven, VT

Average visibility in May - New Haven, VT
  • Average visibility in May: 5mi

The months with the highest visibility are April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February and March (4mi).

New Haven, Vermont, USA

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