May weather forecast
Bethlehem, NH

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Weather in May

The last month of the spring, May, is an enjoyable month in Bethlehem, New Hampshire, with an average temperature varying between 41.9°F (5.5°C) and 62.6°F (17°C).

Temperature

May signals a considerable rise in Bethlehem's average high-temperature, advancing from a chilly 46.9°F (8.3°C) in April to a refreshing 62.6°F (17°C). Bethlehem reports an average nighttime low-temperature of 41.9°F (5.5°C) in May.

Humidity

The least humid month is May, with an average relative humidity of 76%.

Rainfall

In Bethlehem, during May, the rain falls for 17.4 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, in Bethlehem, there are 164.3 rainfall days, and 29.45" (748mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Bethlehem are January through May, October through December. May is the last month it regularly snows. During 0.9 snowfall days, in May, Bethlehem aggregates 1.22" (31mm) of snow. Throughout the year, there are 99.6 snowfall days, and 57.68" (1465mm) of snow is accumulated.

Daylight

The average length of the day in May in Bethlehem is 14h and 48min.
On the first day of May, sunrise is at 5:36 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:05 am and sunset at 8:23 pm EDT.

Sunshine

The average sunshine in May is 8h.

UV index

In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In May, the maximum UV index of 4 transforms into these recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

What are May temperatures in Bethlehem?

The high-temperature in Bethlehem during May is 62.6°F (17°C) and the low-temperature is 41.9°F (5.5°C).

What is the least humid month in Bethlehem?

The least humid month is May, with an average relative humidity of 76%.

What is the average humidity in May in Bethlehem?

In May, the average relative humidity in Bethlehem is 76%.

How much does it rain in Bethlehem in May?

In Bethlehem, during May, the rain falls for 17.4 days and regularly aggregates up to 2.68" (68mm) of precipitation.

What is the last month it snows in Bethlehem?

May is the last month it regularly snows in Bethlehem, New Hampshire. During 0.9 snowfall days, in May, Bethlehem aggregates 1.22" (31mm) of snow.

What is the average length of the day in May in Bethlehem?

In May, the average day length in Bethlehem, New Hampshire, is 14h and 48min.

When is the sunrise / sunset in May in Bethlehem?

In May, on the first day of the month, sunrise is at 5:36 am and sunset at 7:51 pm. On the last day of the month, in Bethlehem, New Hampshire, sunrise is at 5:05 am and sunset at 8:23 pm EDT.

How long on average sun shines in May in Bethlehem?

In May, the average sunshine duration is 8h.

What is the UV index reading in May in Bethlehem?

The average daily maximum UV index in May in Bethlehem is 4. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Bethlehem, NH

Average temperature in May - Bethlehem, NH
  • Average high temperature in May: 62.6°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in May: 41.9°F

The month with the highest average low temperature is July (54.1°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).

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Average pressure in May
Bethlehem, NH

Average pressure in May - Bethlehem, NH
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Bethlehem, NH

Average wind speed in May - Bethlehem, NH
  • Average wind speed in May: 5.8mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in May
Bethlehem, NH

Average humidity in May - Bethlehem, NH
  • Average humidity in May: 76%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in May
Bethlehem, NH

Average rainfall in May - Bethlehem, NH
  • Average rainfall in May: 2.68"

The wettest month (with the highest rainfall) is October (2.91").
The driest month (with the least rainfall) is September (2.09").

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Average rainfall days in May
Bethlehem, NH

Average rainfall days in May - Bethlehem, NH
  • Average rainfall days in May: 17.4 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (6.7 days).

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Average snowfall in May
Bethlehem, NH

Average snowfall in May - Bethlehem, NH
  • Average snowfall in May: 1.22"

The month with the highest snowfall is February (13.58").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Bethlehem, NH

Average snowfall days in May - Bethlehem, NH
  • Average snowfall days in May: 0.9 days

The month with the highest number of snowfall days is January (21.1 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
Bethlehem, NH

Average daylight in May / Average sunshine in May - Bethlehem, NH
  • 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: 8h and 0min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).

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Average sunshine days in May
Bethlehem, NH

Average sunshine days in May - Bethlehem, NH
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (5.9 days).

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Average UV index in May
Bethlehem, NH

Average UV index in May - Bethlehem, NH
  • Average UV index in May: 4

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in May
Bethlehem, NH

Average cloud cover in May - Bethlehem, NH
  • Average cloud cover in May: 50

The month with the most cloud cover is February (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 39).

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Average visibility in May
Bethlehem, NH

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

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

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Bethlehem, New Hampshire, USA

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