May weather forecast
Brookhaven, PA

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Weather in May

May, the last month of the spring in Brookhaven, is a pleasant month, with temperature in the range of an average high of 72°F (22.2°C) and an average low of 55°F (12.8°C).

Temperature

May brings an increase in the average high-temperature, progressing from a comfortable 61.5°F (16.4°C) in April to a pleasant 72°F (22.2°C). In May, Brookhaven experiences an average nighttime temperature of 55°F (12.8°C).

Humidity

The average relative humidity in May in Brookhaven is 76%.

Rainfall

In Brookhaven, in May, during 16.3 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, there are 148.4 rainfall days, and 25.94" (659mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Brookhaven are January through May, November and December. May is the last month it regularly snows in Brookhaven. During 0.1 snowfall days, in May, Brookhaven aggregates 0.16" (4mm) of snow. In Brookhaven, during the entire year, snow falls for 12.6 days and aggregates up to 7.28" (185mm) of snow.

Daylight

The average length of the day in May is 14h and 24min.
On the first day of May, sunrise is at 6:00 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:23 pm EDT.

Sunshine

The average sunshine in May is 8.7h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 6 during May morphs into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Frequently asked questions

What is the usual temperature for Brookhaven in May?

The high-temperature, in May, in Brookhaven, is 72°F (22.2°C), while the low-temperature averages to 55°F (12.8°C).

What is the average humidity in May in Brookhaven?

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

How much does it rain in Brookhaven in May?

In Brookhaven, Pennsylvania, in May, during 16.3 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

What is the last month it snows in Brookhaven?

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

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

In May, the average day length in Brookhaven, Pennsylvania, is 14h and 24min.

When is the sunrise / sunset in May in Brookhaven?

In May, on the first day of the month, sunrise is at 6:00 am and sunset at 7:56 pm. On the last day of the month, in Brookhaven, sunrise is at 5:35 am and sunset at 8:23 pm EDT.

How long on average sun shines in May in Brookhaven?

In Brookhaven, Pennsylvania, the average sunshine duration in May is 8.7h.

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

May through August, with an average maximum UV index of 6, are months with the highest UV index in Brookhaven, Pennsylvania.

What is the UV index reading in May in Brookhaven?

The average daily maximum UV index in May in Brookhaven, Pennsylvania, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Brookhaven, PA

Average temperature in May - Brookhaven, PA
  • Average high temperature in May: 72°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in May: 55°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

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Average pressure in May
Brookhaven, PA

Average pressure in May - Brookhaven, PA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Brookhaven, PA

Average wind speed in May - Brookhaven, PA
  • Average wind speed in May: 6.8mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in May
Brookhaven, PA

Average humidity in May - Brookhaven, PA
  • Average humidity in May: 76%

The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in May
Brookhaven, PA

Average rainfall in May - Brookhaven, PA
  • Average rainfall in May: 2.32"

The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.61").

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Average rainfall days in May
Brookhaven, PA

Average rainfall days in May - Brookhaven, PA
  • Average rainfall days in May: 16.3 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in May
Brookhaven, PA

Average snowfall in May - Brookhaven, PA
  • Average snowfall in May: 0.16"

The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Brookhaven, PA

Average snowfall days in May - Brookhaven, PA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Brookhaven, PA

Average daylight in May / Average sunshine in May - Brookhaven, PA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in May
Brookhaven, PA

Average sunshine days in May - Brookhaven, PA
  • Average sunshine days in May: 12.7 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (11.3 days).

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Average UV index in May
Brookhaven, PA

Average UV index in May - Brookhaven, PA
  • Average UV index in May: 6

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

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Average cloud cover in May
Brookhaven, PA

Average cloud cover in May - Brookhaven, PA
  • Average cloud cover in May: 45

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in May
Brookhaven, PA

Average visibility in May - Brookhaven, PA
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Brookhaven, Pennsylvania, USA

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