May weather forecast
East Derry, NH

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Weather in May

The last month of the spring, May, is a comfortable month in East Derry, New Hampshire, with an average temperature ranging between min 47.1°F (8.4°C) and max 66.9°F (19.4°C).

Temperature

In East Derry, the average high-temperature in May rises, from a cool 55°F (12.8°C) in April, to a refreshing 66.9°F (19.4°C). East Derry in May anticipates an average nighttime temperature of 47.1°F (8.4°C).

Humidity

The average relative humidity in May is 74%.

Rainfall

In East Derry, New Hampshire, during May, the rain falls for 12 days and regularly aggregates up to 0.98" (25mm) of precipitation. In East Derry, during the entire year, the rain falls for 104.4 days and collects up to 12.95" (329mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, East Derry aggregates 0.04" (1mm) of snow. Throughout the year, there are 26.1 snowfall days, and 11.54" (293mm) of snow is accumulated.

Daylight

In East Derry, the average length of the day in May is 14h and 40min.
On the first day of May, sunrise is at 5:38 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:09 am and sunset at 8:16 pm EDT.

Sunshine

In East Derry, the average sunshine in May is 8.4h.

UV index

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: In May, the UV index of 5 transforms into the following advice:
Exercise prevention - Warding off sunburn is urged. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

What is the average May temperature?

May temperatures vary between a high-temperature of 66.9°F (19.4°C) and a low-temperature of 47.1°F (8.4°C).

What is the average humidity in May?

The average relative humidity in May in East Derry is 74%.

How many days does it rain in May?

In East Derry, in May, during 12 rainfall days, 0.98" (25mm) of precipitation is typically accumulated.

What is the last month it snows in East Derry?

May is the last month it regularly snows in East Derry. During 0.1 snowfall days, in May, East Derry aggregates 0.04" (1mm) of snow.

How many hours of daylight does East Derry have in May?

The average day length in May is 14h and 40min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:38 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:09 am and sunset at 8:16 pm EDT.

How long on average sun shines in May?

In May, the average sunshine duration in East Derry is 8.4h.

What is the UV index intensity in May?

In East Derry, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's 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
East Derry, NH

Average temperature in May - East Derry, NH
  • Average high temperature in May: 66.9°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in May: 47.1°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in May
East Derry, NH

Average pressure in May - East Derry, 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
East Derry, NH

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

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in May
East Derry, NH

Average humidity in May - East Derry, NH
  • Average humidity in May: 74%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).

Average rainfall in May
East Derry, NH

Average rainfall in May - East Derry, NH
  • Average rainfall in May: 0.98"

The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in May
East Derry, NH

Average rainfall days in May - East Derry, NH
  • Average rainfall days in May: 12 days

The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is January (4.1 days).

Average snowfall in May
East Derry, NH

Average snowfall in May - East Derry, NH
  • Average snowfall in May: 0.04"

The month with the highest snowfall is December (2.99").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
East Derry, NH

Average snowfall days in May - East Derry, NH
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
East Derry, NH

Average daylight in May / Average sunshine in May - East Derry, 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
East Derry, NH

Average sunshine days in May - East Derry, NH
  • Average sunshine days in May: 17.1 days

The months with the most sunshine days are January and December (21.3 days).
The month with the least sunshine days is June (16.7 days).

Average UV index in May
East Derry, NH

Average UV index in May - East Derry, NH
  • Average UV index in May: 5

The months with the highest UV index are June, 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
East Derry, NH

Average cloud cover in May - East Derry, NH
  • Average cloud cover in May: 47

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in May
East Derry, NH

Average visibility in May - East Derry, NH
  • Average visibility in May: 5mi

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

East Derry, New Hampshire, USA

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