May weather forecast
Windham, NH

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Weather in May

As the calendar flips to May, spring is fully underway. The tantalizing smell of blooming flowers fills the air, coupled with a heightened comfort in temperatures. This month is indeed a break from the snowfall, with precipitation reduced to only 0.16" (4mm) contained within 0.1 days. The warm days seamlessly blend into cool nights, creating an ever-changing mosaic of weather patterns. Meanwhile, the wind continues its mellow trend, contributing to a genuinely pleasing climate.

Temperature

May's onset in Windham witnesses a shift in the average high-temperature, moving from a cool 54.7°F (12.6°C) in April to a comfortable 66°F (18.9°C). Throughout May, an average low-temperature of 48.7°F (9.3°C) is experienced.

Humidity

In Windham, the average relative humidity in May is 73%.

Rainfall

In Windham, New Hampshire, in May, during 15.9 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. Throughout the year, there are 144 rainfall days, and 26.97" (685mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Windham aggregates 0.16" (4mm) of snow. Throughout the year, there are 31.9 snowfall days, and 20.94" (532mm) of snow is accumulated.

Daylight

In May, the average length of the day in Windham, New Hampshire, is 14h and 40min.
On the first day of May in Windham, 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 May, the average sunshine in Windham, New Hampshire, is 8.6h.

UV index

In Windham, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What is the average May temperature in Windham?

The high-temperature, in May, in Windham, records 66°F (18.9°C), while the low-temperature is 48.7°F (9.3°C).

What is the average humidity in May in Windham?

In Windham, New Hampshire, the average relative humidity in May is 73%.

How many days does it rain in May in Windham?

In Windham, in May, it is raining for 15.9 days, with typically 1.97" (50mm) of accumulated precipitation.

What is the last month it snows in Windham?

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

How many hours of daylight does Windham have in May?

In May, the average day length in Windham, New Hampshire, is 14h and 40min.

When is the sunrise / sunset in May in Windham?

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

How long on average sun shines in May in Windham?

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

How high is the UV index in May in Windham?

In Windham, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from 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
Windham, NH

Average temperature in May - Windham, NH
  • Average high temperature in May: 66°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 (32.2°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

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Average pressure in May
Windham, NH

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

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Windham, NH

Average wind speed in May - Windham, NH
  • Average wind speed in May: 6.8mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in May
Windham, NH

Average humidity in May - Windham, NH
  • Average humidity in May: 73%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in May
Windham, NH

Average rainfall in May - Windham, NH
  • Average rainfall in May: 1.97"

The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.3").

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Average rainfall days in May
Windham, NH

Average rainfall days in May - Windham, NH
  • Average rainfall days in May: 15.9 days

The month with the highest number of rainy days is May (15.9 days).
The months with the least rainy days are January and February (7.6 days).

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Average snowfall in May
Windham, NH

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

The month with the highest snowfall is February (5.87").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Windham, NH

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

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Windham, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in May
Windham, NH

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

The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is May (13.5 days).

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Average UV index in May
Windham, NH

Average UV index in May - Windham, 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).

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Average cloud cover in May
Windham, NH

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

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in May
Windham, NH

Average visibility in May - Windham, NH
  • Average visibility in May: 6mi

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

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Windham, New Hampshire, USA

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