May weather forecast and climate
South Effingham, NH

May, the last month of the spring, in South Effingham, is a comfortable month, with average temperature fluctuating between 44.1°F (6.7°C) and 63.9°F (17.7°C).

Temperature

In South Effingham, New Hampshire, the average high-temperature in May increases, from a cool 51.3°F (10.7°C) in April, to a comfortable 63.9°F (17.7°C). In South Effingham, the average low-temperature is 44.1°F (6.7°C).

Humidity

The average relative humidity in South Effingham is 78%.

Rainfall

In South Effingham, in May, it is raining for 14.8 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 138 rainfall days, and 30.08" (764mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in South Effingham, New Hampshire. May is the last month it regularly snows in South Effingham. During 0.2 snowfall days, South Effingham aggregates 0.43" (11mm) of snow. In South Effingham, during the entire year, snow falls for 48.9 days, and aggregates up to 38.15" (969mm) of snow.

Daylight

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

Sunshine

The average sunshine in South Effingham is 7.7h.

UV index

In May, the average daily maximum UV index in South Effingham is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
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. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in May in South Effingham?

In South Effingham, in May, the average high-temperature is 63.9°F (17.7°C), and the average low-temperature is 44.1°F (6.7°C).

What is the average humidity in May in South Effingham?

In May, the average relative humidity is 78%.

How many days does it rain in May in South Effingham?

In South Effingham, New Hampshire, in May, it is raining for 14.8 days, with typically 2.24" (57mm) of accumulated precipitation.

What is the last month it snows in South Effingham?

May is the last month it regularly snows in South Effingham. During 0.2 snowfall days, in May, South Effingham aggregates 0.43" (11mm) of snow.

How many hours of daylight does South Effingham have in May?

The average length of the day in May in South Effingham, New Hampshire, is 14.7h.

How long on average sun shines in May in South Effingham?

The average sunshine in May in South Effingham is 7.7h.

What is the UV index intensity in May in South Effingham?

In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.
Average temperature in May - South Effingham, NH
  • Average high temperature in May: 17.7°C

The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is January (-2.4°C).

  • Average low temperature in May: 6.7°C

The month with the highest average low temperature is July (14.4°C).
The coldest month (with the lowest average low temperature) is January (-10.1°C).

Average pressure in May - South Effingham, NH
  • Average pressure in May: 1015.6mbar

The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1013mbar).

Average wind speed in May - South Effingham, NH
  • Average wind speed in May: 9.6km/h

The windiest month (with the highest average wind speed) is January (12.2km/h).
The calmest months (with the lowest average wind speed) are July and August (7.8km/h).

Average humidity in May - South Effingham, NH
  • Average humidity in May: 78%

Months with the highest relative humidity are January and February (85%).
Months with the lowest relative humidity are April and November (77%).

Average rainfall in May - South Effingham, NH
  • Average rainfall in May: 57mm

The wettest month (with the highest rainfall) is October (84mm).
The driest month (with the least rainfall) is September (39mm).

Average rainfall days in May - South Effingham, NH
  • Average rainfall days in May: 14.8 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is February (5.5 days).

Average snowfall in May - South Effingham, NH
  • Average snowfall in May: 11mm

The month with the highest snowfall is February (247mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May - South Effingham, NH
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (11.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - South Effingham, 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: 7.7h

The month with the most sunshine is August (Average sunshine: 10h).
The month with the least sunshine is February (Average sunshine: 4.5h).

Average sunshine days in May - South Effingham, NH
  • Average sunshine days in May: 14.7 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (13.2 days).

Average UV index in May - South Effingham, NH
  • Average UV index in May: 4

Months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in May - South Effingham, NH
  • Average cloud cover in May: 50

The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in May - South Effingham, NH
  • Average visibility in May: 8km

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