May weather forecast and climate
Bethlehem, NH

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

Temperature

In May, the average high-temperature increases considerably, from a frosty 46.9°F (8.3°C) in April, to an enjoyable 62.6°F (17°C). The average low-temperature, in Bethlehem, New Hampshire, is 41.9°F (5.5°C).

Humidity

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

Rainfall

In May, in Bethlehem, the rain falls for 17.4 days. Throughout May, 2.68" (68mm) of precipitation is accumulated. 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 in Bethlehem. During 0.9 snowfall days, 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

In Bethlehem, the average length of the day is 14.8h.

Sunshine

In Bethlehem, New Hampshire, the average sunshine is 8h.

UV index

In May, the average daily maximum UV index in Bethlehem is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 in May interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in May in Bethlehem?

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

What is the least humid month in Bethlehem?

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

What is the average humidity in May in Bethlehem?

The average relative humidity in May 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. 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 length of the day in Bethlehem is 14.8h.

How many hours of sunshine does Bethlehem have in May?

In Bethlehem, the average sunshine in May is 8h.

What is the UV index intensity in May in Bethlehem?

In Bethlehem, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in May - Bethlehem, NH
  • Average high temperature in May: 17°C

The warmest month (with the highest average high temperature) is July (24.6°C).
The month with the lowest average high temperature is January (-5.3°C).

  • Average low temperature in May: 5.5°C

The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-12.6°C).

Average pressure in May - Bethlehem, NH
  • Average pressure in May: 1015.3mbar

The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1012.8mbar).

Average wind speed in May - Bethlehem, NH
  • Average wind speed in May: 9.4km/h

The windiest month (with the highest average wind speed) is April (10.5km/h).
The calmest month (with the lowest average wind speed) is August (7.3km/h).

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

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

Average rainfall in May - Bethlehem, NH
  • Average rainfall in May: 68mm

The wettest month (with the highest rainfall) is October (74mm).
The driest month (with the least rainfall) is September (53mm).

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).

Average snowfall in May - Bethlehem, NH
  • Average snowfall in May: 31mm

The month with the highest snowfall is February (345mm).
Months with the least snowfall are June, July, August and September (0mm).

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).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Bethlehem, NH
  • Average daylight in May: 14.8h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in May: 8h

The month with the most sunshine is August (Average sunshine: 9.9h).
The month with the least sunshine is February (Average sunshine: 3h).

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).

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

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

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).
Months with the least cloud cover are July and August (Cloud cover 39).

Average visibility in May - Bethlehem, NH
  • Average visibility in May: 8km

Months with the highest visibility are April, May, June, July, August, October and November (8km).
Months with the lowest visibility are January and February (6km).