May weather forecast
Wilton, NH

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Weather in May

The last month of the spring, May, is an enjoyable month in Wilton, New Hampshire, with an average temperature fluctuating between 46.9°F (8.3°C) and 67.1°F (19.5°C).

Temperature

May marks a rise in the average high-temperature, moving from April's cool 54.7°F (12.6°C) to a comfortable 67.1°F (19.5°C). Wilton, during May, witnesses an average low-temperature of 46.9°F (8.3°C).

Humidity

In Wilton, the average relative humidity in May is 74%.

Rainfall

In Wilton, in May, during 15.7 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 146.9 rainfall days, and 28.15" (715mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Wilton aggregates 0.16" (4mm) of snow. In Wilton, during the entire year, snow falls for 38.3 days and aggregates up to 26.42" (671mm) of snow.

Daylight

In May, the average length of the day is 14h and 40min.
On the first day of the month, sunrise is at 5:39 am and sunset at 7:48 pm. On the last day of May, sunrise is at 5:11 am and sunset at 8:18 pm EDT.

Sunshine

In Wilton, the average sunshine in May is 8.4h.

UV index

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Updated: Jun 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

During May, Wilton experiences an average high-temperature of 67.1°F (19.5°C) and a low-temperature of 46.9°F (8.3°C).

What is the average humidity in May?

In Wilton, the average relative humidity in May is 74%.

How many days does it rain in May?

In Wilton, in May, during 15.7 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Wilton aggregates 0.16" (4mm) of snow.

How many hours of daylight does Wilton have in May?

In May, the average day length is 14h and 40min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 5:39 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:11 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 8.4h.

What is the UV index intensity in May in Wilton?

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
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, NH

Average temperature in May - Wilton, NH
  • Average high temperature in May: 67.1°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in May: 46.9°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in May
Wilton, NH

Average pressure in May - Wilton, NH
  • Average pressure in May: 30"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Wilton, NH

Average wind speed in May - Wilton, NH
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity in May
Wilton, NH

Average humidity in May - Wilton, NH
  • Average humidity in May: 74%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).

Average rainfall in May
Wilton, NH

Average rainfall in May - Wilton, NH
  • Average rainfall in May: 2.2"

The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in May
Wilton, NH

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

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (6.9 days).

Average snowfall in May
Wilton, NH

Average snowfall in May - Wilton, NH
  • Average snowfall in May: 0.16"

The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Wilton, NH

Average snowfall days in May - Wilton, NH
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (9.4 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, NH

Average daylight in May / Average sunshine in May - Wilton, NH
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 8h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in May
Wilton, NH

Average sunshine days in May - Wilton, NH
  • Average sunshine days in May: 13.5 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is April (13.2 days).

Average UV index in May
Wilton, NH

Average UV index in May - Wilton, NH
  • Average UV index in May: 5

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in May
Wilton, NH

Average cloud cover in May - Wilton, NH
  • Average cloud cover in May: 47

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in May
Wilton, NH

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

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

Wilton, New Hampshire, USA

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