May weather forecast and climate
Brookline, NH

The last month of the spring, May, is a comfortable month in Brookline, New Hampshire, with average temperature varying between 47.7°F (8.7°C) and 67.3°F (19.6°C).

Temperature

In May, the average high-temperature rises, from a fresh 55.2°F (12.9°C) in April, to a comfortable 67.3°F (19.6°C). The average low-temperature, in Brookline, is 47.7°F (8.7°C).

Humidity

In May, the average relative humidity is 73%.

Rainfall

In Brookline, New Hampshire, it is raining for 15.3 days, with typically 2.13" (54mm) of accumulated precipitation. In Brookline, New Hampshire, during the entire year, the rain falls for 147.4 days and collects up to 28.46" (723mm) of precipitation.

Snowfall

Months with snowfall in Brookline are January through May, October through December. May is the last month it regularly snows in Brookline. During 0.1 snowfall days, Brookline aggregates 0.16" (4mm) of snow. In Brookline, during the entire year, snow falls for 35.7 days, and aggregates up to 25.35" (644mm) of snow.

Daylight

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

Sunshine

The average sunshine is 8.5h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Brookline?

In May, the average high-temperature is 67.3°F (19.6°C), and the average low-temperature is 47.7°F (8.7°C).

What is the average humidity in May in Brookline?

The average relative humidity in May is 73%.

How much does it rain in Brookline in May?

In Brookline, New Hampshire, during May, the rain falls for 15.3 days and regularly aggregates up to 2.13" (54mm) of precipitation.

What is the last month it snows in Brookline?

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

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

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

How many hours of sunshine does Brookline have in May?

The average sunshine in May in Brookline is 8.5h.

What is the UV index reading in May in Brookline?

In May, the average daily maximum UV index in Brookline is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in May - Brookline, NH
  • Average high temperature in May: 19.6°C

The warmest month (with the highest average high temperature) is July (27.7°C).
The month with the lowest average high temperature is January (-0.6°C).

  • Average low temperature in May: 8.7°C

The month with the highest average low temperature is July (16.5°C).
The coldest month (with the lowest average low temperature) is January (-7.5°C).

Average pressure in May - Brookline, NH
  • Average pressure in May: 1015.9mbar

The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).

Average wind speed in May - Brookline, NH
  • Average wind speed in May: 10.3km/h

The windiest month (with the highest average wind speed) is January (13.3km/h).
The calmest month (with the lowest average wind speed) is August (8.5km/h).

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

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).

Average rainfall in May - Brookline, NH
  • Average rainfall in May: 54mm

The wettest months (with the highest rainfall) are October and December (72mm).
The driest month (with the least rainfall) is September (38mm).

Average rainfall days in May - Brookline, NH
  • Average rainfall days in May: 15.3 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (7.3 days).

Average snowfall in May - Brookline, NH
  • Average snowfall in May: 4mm

The month with the highest snowfall is February (162mm).
Months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is January (9.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in May: 8.5h

The month with the most sunshine is August (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average sunshine days in May - Brookline, NH
  • Average sunshine days in May: 13.2 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (13.2 days).

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in May - Brookline, NH
  • Average cloud cover in May: 46

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

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

Months with the highest visibility are April, November and December (9km).
Months with the lowest visibility are January, February, March, May, June, July, August, September and October (8km).