May weather forecast and climate
Hanover, NH

The last month of the spring, May, is a comfortable month in Hanover, New Hampshire, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 64.6°F (18.1°C).

Temperature

In Hanover, the average high-temperature increases, from a fresh 50.4°F (10.2°C) in April, to a comfortable 64.6°F (18.1°C). The average low-temperature, in May, is 44.2°F (6.8°C).

Humidity

With an average relative humidity of 75%, May is the least humid month in Hanover.

Rainfall

In Hanover, during 16.4 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, there are 156.9 rainfall days, and 28.23" (717mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Hanover, New Hampshire. May is the last month it regularly snows. During 0.5 snowfall days, Hanover aggregates 0.43" (11mm) of snow. In Hanover, during the entire year, snow falls for 75.5 days, and aggregates up to 40.83" (1037mm) of snow.

Daylight

In May, the average length of the day is 14.7h.

Sunshine

In May, the average sunshine in Hanover is 8.2h.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Hanover?

In May, in Hanover, the average high-temperature is 64.6°F (18.1°C), and the average low-temperature is 44.2°F (6.8°C).

What is the least humid month in Hanover?

May is the least humid month, with an average relative humidity of 75%.

What is the average humidity in May in Hanover?

In Hanover, New Hampshire, the average relative humidity in May is 75%.

How much does it rain in Hanover in May?

In May, the rain falls for 16.4 days. Throughout May, 2.32" (59mm) of precipitation is accumulated.

What is the last month it snows in Hanover?

May is the last month it regularly snows. During 0.5 snowfall days, in May, Hanover aggregates 0.43" (11mm) of snow.

How many hours of daylight does Hanover have in May?

The average length of the day in May in Hanover is 14.7h.

How long on average sun shines in May in Hanover?

In Hanover, New Hampshire, the average sunshine in May is 8.2h.

What are the months with the highest UV index in Hanover?

Months with the highest UV index are May through August, with an average maximum UV index of 5.

What is the UV index intensity in May in Hanover?

In May, the average daily maximum UV index in Hanover is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.
Average temperature in May - Hanover, NH
  • Average high temperature in May: 18.1°C

The warmest month (with the highest average high temperature) is July (25.4°C).
The month with the lowest average high temperature is January (-3.9°C).

  • Average low temperature in May: 6.8°C

The month with the highest average low temperature is July (13.6°C).
The coldest month (with the lowest average low temperature) is January (-10.8°C).

Average pressure in May - Hanover, NH
  • Average pressure in May: 1015.5mbar

The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013mbar).

Average wind speed in May - Hanover, NH
  • Average wind speed in May: 10.1km/h

The windiest month (with the highest average wind speed) is April (11.9km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).

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

Months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is May (75%).

Average rainfall in May - Hanover, NH
  • Average rainfall in May: 59mm

The wettest month (with the highest rainfall) is October (76mm).
The driest month (with the least rainfall) is September (47mm).

Average rainfall days in May - Hanover, NH
  • Average rainfall days in May: 16.4 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (7.9 days).

Average snowfall in May - Hanover, NH
  • Average snowfall in May: 11mm

The month with the highest snowfall is February (294mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May - Hanover, NH
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is January (16.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Hanover, NH
  • Average daylight in May: 14.7h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in May: 8.2h

The month with the most sunshine is August (Average sunshine: 10.1h).
The month with the least sunshine is February (Average sunshine: 3.6h).

Average sunshine days in May - Hanover, NH
  • Average sunshine days in May: 11.9 days

The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is February (9.8 days).

Average UV index in May - Hanover, NH
  • Average UV index in May: 5

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

Average cloud cover in May - Hanover, NH
  • Average cloud cover in May: 49

The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 37).

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

Months with the highest visibility are April, May, June, July, August, October, November and December (8km).
Months with the lowest visibility are January, February, March and September (7km).