May weather forecast
Walpole, NH

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Weather in May

The last month of the spring, May, is a refreshing month in Walpole, New Hampshire, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 45.1°F (7.3°C).

Temperature

May brings an increase in the average high-temperature, progressing from a cool 52°F (11.1°C) in April to a refreshing 65.8°F (18.8°C). An average low-temperature of 45.1°F (7.3°C) is recorded during the nights in May.

Humidity

In Walpole, the average relative humidity in May is 75%.

Rainfall

In May, the rain falls for 11.9 days. Throughout May, 1.34" (34mm) of precipitation is accumulated. Throughout the year, there are 113.5 rainfall days, and 16.77" (426mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Walpole aggregates 0.2" (5mm) of snow. In Walpole, during the entire year, snow falls for 31 days and aggregates up to 16.22" (412mm) of snow.

Daylight

In Walpole, New Hampshire, the average length of the day in May is 14h and 41min.
On the first day of May, sunrise is at 5:42 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:21 pm EDT.

Sunshine

The average sunshine in May is 8.6h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 5 in May translates into this advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in May?

In May, in Walpole, the average high-temperature is 65.8°F (18.8°C), and the average low-temperature is 45.1°F (7.3°C).

What is the average humidity in May?

In May, the average relative humidity is 75%.

How many days does it rain in May?

In Walpole, in May, it is raining for 11.9 days, with typically 1.34" (34mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Walpole aggregates 0.2" (5mm) of snow.

How many hours of daylight does Walpole have in May?

In Walpole, the average day length in May is 14h and 41min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:42 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:21 pm EDT.

How long on average sun shines in May in Walpole?

In Walpole, the average sunshine duration in May is 8.6h.

What is the month 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 Walpole, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Walpole, NH

Average temperature in May - Walpole, NH
  • Average high temperature in May: 65.8°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.5°F).

  • Average low temperature in May: 45.1°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).

Average pressure in May
Walpole, NH

Average pressure in May - Walpole, NH
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Walpole, NH

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

The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in May
Walpole, NH

Average humidity in May - Walpole, NH
  • Average humidity in May: 75%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).

Average rainfall in May
Walpole, NH

Average rainfall in May - Walpole, NH
  • Average rainfall in May: 1.34"

The wettest month (with the highest rainfall) is October (1.77").
The driest months (with the least rainfall) are January and March (1.06").

Average rainfall days in May
Walpole, NH

Average rainfall days in May - Walpole, NH
  • Average rainfall days in May: 11.9 days

The month with the highest number of rainy days is July (12.1 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in May
Walpole, NH

Average snowfall in May - Walpole, NH
  • Average snowfall in May: 0.2"

The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Walpole, NH

Average snowfall days in May - Walpole, NH
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Walpole, NH

Average daylight in May / Average sunshine in May - Walpole, 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 4min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in May
Walpole, NH

Average sunshine days in May - Walpole, NH
  • Average sunshine days in May: 16.5 days

The month with the most sunshine days is November (20.5 days).
The months with the least sunshine days are April and June (16 days).

Average UV index in May
Walpole, NH

Average UV index in May - Walpole, NH
  • 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, February, March, October, November and December (UV index 2).

Average cloud cover in May
Walpole, NH

Average cloud cover in May - Walpole, NH
  • Average cloud cover in May: 45

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in May
Walpole, NH

Average visibility in May - Walpole, 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).

Walpole, New Hampshire, USA

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