May weather forecast
Wilton, ME

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Weather in May

May, the last month of the spring in Wilton, is a comfortable month, with an average temperature ranging between min 42.8°F (6°C) and max 63.1°F (17.3°C).

Temperature

The transition from April to May brings a temperature rise, with average high-temperatures increasing from a chilly 49.5°F (9.7°C) to a refreshing 63.1°F (17.3°C). May nights are marked by an average low-temperature of 42.8°F (6°C).

Humidity

The average relative humidity in May in Wilton is 77%.

Rainfall

In Wilton, in May, it is raining for 15.7 days, with typically 2.36" (60mm) of accumulated precipitation. In Wilton, Maine, during the entire year, the rain falls for 139.5 days and collects up to 28.78" (731mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Wilton aggregates 0.43" (11mm) of snow. In Wilton, during the entire year, snow falls for 58.6 days and aggregates up to 42.36" (1076mm) of snow.

Daylight

In May, the average length of the day is 14h and 50min.
On the first day of May, sunrise is at 5:29 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 4:58 am and sunset at 8:18 pm EDT.

Sunshine

In Wilton, the average sunshine in May is 7.7h.

UV index

In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, a daily UV index of 4 turns into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Wilton?

In May, the average high-temperature and low-temperature in Wilton are 63.1°F (17.3°C) and 42.8°F (6°C) respectively.

What is the average humidity in May in Wilton?

The average relative humidity in May in Wilton, Maine, is 77%.

How many days does it rain in May in Wilton?

In Wilton, Maine, during May, the rain falls for 15.7 days and regularly aggregates up to 2.36" (60mm) of precipitation.

What is the last month it snows in Wilton?

May is the last month it regularly snows in Wilton, Maine. During 0.2 snowfall days, in May, Wilton aggregates 0.43" (11mm) of snow.

How many hours of daylight does Wilton have in May?

In Wilton, Maine, the average day length in May is 14h and 50min.

When is the sunrise / sunset in May in Wilton?

On the first day of May in Wilton, sunrise is at 5:29 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 4:58 am and sunset at 8:18 pm EDT.

How many hours of sunshine does Wilton have in May?

In May, the average sunshine duration is 7.7h.

What is the UV index reading in May in Wilton?

The average daily maximum UV index in May is 4. A UV Index value 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
Wilton, ME

Average temperature in May - Wilton, ME
  • Average high temperature in May: 63.1°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25°F).

  • Average low temperature in May: 42.8°F

The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

Average pressure in May
Wilton, ME

Average pressure in May - Wilton, ME
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Wilton, ME

Average wind speed in May - Wilton, ME
  • Average wind speed in May: 6.2mph

The windiest month (with the highest average wind speed) is March (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in May
Wilton, ME

Average humidity in May - Wilton, ME
  • Average humidity in May: 77%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is November (76%).

Average rainfall in May
Wilton, ME

Average rainfall in May - Wilton, ME
  • Average rainfall in May: 2.36"

The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is July (1.61").

Average rainfall days in May
Wilton, ME

Average rainfall days in May - Wilton, ME
  • Average rainfall days in May: 15.7 days

The month with the highest number of rainy days is May (15.7 days).
The months with the least rainy days are January and February (7 days).

Average snowfall in May
Wilton, ME

Average snowfall in May - Wilton, ME
  • Average snowfall in May: 0.43"

The month with the highest snowfall is February (9.65").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Wilton, ME

Average snowfall days in May - Wilton, ME
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is March (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Wilton, ME

Average daylight in May / Average sunshine in May - Wilton, ME
  • 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: 7h and 4min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

Average sunshine days in May
Wilton, ME

Average sunshine days in May - Wilton, ME
  • Average sunshine days in May: 12.9 days

The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (12.1 days).

Average UV index in May
Wilton, ME

Average UV index in May - Wilton, ME
  • Average UV index in May: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in May
Wilton, ME

Average cloud cover in May - Wilton, ME
  • Average cloud cover in May: 51

The months with the most cloud cover are February and April (Cloud cover 54).
The month with the least cloud cover is September (Cloud cover 38).

Average visibility in May
Wilton, ME

Average visibility in May - Wilton, ME
  • Average visibility in May: 5mi

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

Wilton, Maine, USA

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