May weather forecast
Colchester, VT

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Weather in May

May is a beautiful time in Colchester, Vermont, with the city fully embracing spring. A significant difference is observed between the high and low temperatures, a reflection of the seasonal transition. This is when the last traces of snow disappear, and rainfall begins to steadily increase. With the arrival of greenery and more sunlight, it's evident that May prepares the city for the approaching summer months. Longer daylight hours and increased levels of sunshine enhance the joy of outdoor activities, eliciting the unique charm of Colchester.

Temperature

The shift into May brings a noticeable increase in the average high-temperature, soaring from a chilly 49.8°F (9.9°C) in April to a comfortable 64.9°F (18.3°C). Throughout May, Colchester witnesses a consistent average low-temperature of 45°F (7.2°C).

Humidity

With an average relative humidity of 75%, May is the least humid month in Colchester, Vermont.

Rainfall

In Colchester, in May, during 16.1 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 153.4 rainfall days, and 17.01" (432mm) 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, Colchester aggregates 0.24" (6mm) of snow. Throughout the year, there are 87.7 snowfall days, and 22.64" (575mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 50min.
On the first day of the month, sunrise is at 5:41 am and sunset at 7:57 pm. On the last day of May, sunrise is at 5:10 am and sunset at 8:30 pm EDT.

Sunshine

In May, the average sunshine is 8.5h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 5 during May translates into the following guidance:
Guard yourself - Avoiding sunburn is suggested. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Colchester in May?

May temperatures vary between a high-temperature of 64.9°F (18.3°C) and a low-temperature of 45°F (7.2°C).

What is the least humid month?

The least humid month is May, with an average relative humidity of 75%.

What is the average humidity in May?

The average relative humidity in May in Colchester is 75%.

How much does it rain in May?

In Colchester, in May, during 16.1 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.8 snowfall days, in May, Colchester aggregates 0.24" (6mm) of snow.

What is the average length of the day in May?

The average day length in May is 14h and 50min.

What time are sunrise and sunset in May?

On the first day of May in Colchester, sunrise is at 5:41 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:30 pm EDT.

How many hours of sunshine does Colchester have in May?

In Colchester, the average sunshine duration in May is 8.5h.

When is the highest UV index?

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

How high is the UV index in May?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk 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
Colchester, VT

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

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (24.6°F).

  • Average low temperature in May: 45°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

Average pressure in May
Colchester, VT

Average pressure in May - Colchester, 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
Colchester, VT

Average wind speed in May - Colchester, VT
  • Average wind speed in May: 6.6mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in May
Colchester, VT

Average humidity in May - Colchester, VT
  • Average humidity in May: 75%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (75%).

Average rainfall in May
Colchester, VT

Average rainfall in May - Colchester, VT
  • Average rainfall in May: 1.85"

The wettest month (with the highest rainfall) is June (2.09").
The driest month (with the least rainfall) is February (0.87").

Average rainfall days in May
Colchester, VT

Average rainfall days in May - Colchester, VT
  • Average rainfall days in May: 16.1 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is January (7.4 days).

Average snowfall in May
Colchester, VT

Average snowfall in May - Colchester, VT
  • Average snowfall in May: 0.24"

The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Colchester, VT

Average snowfall days in May - Colchester, VT
  • Average snowfall days in May: 0.8 days

The months with the highest number of snowfall days are January and February (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Colchester, VT

Average daylight in May / Average sunshine in May - Colchester, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 3h and 0min).

Average sunshine days in May
Colchester, VT

Average sunshine days in May - Colchester, VT
  • Average sunshine days in May: 12.9 days

The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is February (7.3 days).

Average UV index in May
Colchester, VT

Average UV index in May - Colchester, 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
Colchester, VT

Average cloud cover in May - Colchester, VT
  • Average cloud cover in May: 46

The month with the most cloud cover is February (Cloud cover 70).
The months with the least cloud cover are July, August and September (Cloud cover 35).

Average visibility in May
Colchester, VT

Average visibility in May - Colchester, VT
  • Average visibility in May: 5mi

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

Colchester, Vermont, USA

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