May weather forecast
Summerdale, PA

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Weather in May

The last month of the spring, May, is a pleasant month in Summerdale, Pennsylvania, with an average temperature varying between 51.4°F (10.8°C) and 70.3°F (21.3°C).

Temperature

Summerdale's May weather shows an increase in high-temperatures, moving from April's mild 60.1°F (15.6°C) to an agreeable 70.3°F (21.3°C). During the month of May, an average temperature of 51.4°F (10.8°C) is noted during the nights.

Humidity

In May, the average relative humidity is 79%.

Rainfall

In May, in Summerdale, the rain falls for 13.9 days. Throughout May, 1.26" (32mm) of precipitation is accumulated. In Summerdale, during the entire year, the rain falls for 122.3 days and collects up to 11.73" (298mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In May, the average length of the day in Summerdale is 14h and 26min.
On the first day of the month, sunrise is at 6:06 am and sunset at 8:03 pm. On the last day of May, sunrise is at 5:40 am and sunset at 8:31 pm EDT.

Sunshine

The average sunshine in May is 8.5h.

UV index

May through July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 6 in May interprets into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

What is the average May temperature in Summerdale?

The high-temperature, in May, in Summerdale, records 70.3°F (21.3°C), while the low-temperature is 51.4°F (10.8°C).

What is the average humidity in May in Summerdale?

The average relative humidity in May in Summerdale, Pennsylvania, is 79%.

How much does it rain in Summerdale in May?

In Summerdale, in May, it is raining for 13.9 days, with typically 1.26" (32mm) of accumulated precipitation.

When it does not snow in Summerdale?

In Summerdale, Pennsylvania, snow does not fall in May through October.

Does it snow in Summerdale in May?

In May, in Summerdale, Pennsylvania, it doesn't snow. April is the latest month when it typically snows.

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

In Summerdale, the average day length in May is 14h and 26min.

When are sunrise and sunset in May in Summerdale?

In May, on the first day of the month, sunrise is at 6:06 am and sunset at 8:03 pm. On the last day of the month, in Summerdale, Pennsylvania, sunrise is at 5:40 am and sunset at 8:31 pm EDT.

How long on average sun shines in May in Summerdale?

The average sunshine duration in May in Summerdale, Pennsylvania, is 8.5h.

When is the highest UV index in Summerdale?

The months with the highest UV index in Summerdale are May through July, with an average maximum UV index of 6.

How high is the UV index in May in Summerdale?

In May, the average daily maximum UV index in Summerdale, Pennsylvania, is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe 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
Summerdale, PA

Average temperature in May - Summerdale, PA
  • Average high temperature in May: 70.3°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in May: 51.4°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in May
Summerdale, PA

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

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in May
Summerdale, PA

Average wind speed in May - Summerdale, PA
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in May
Summerdale, PA

Average humidity in May - Summerdale, PA
  • Average humidity in May: 79%

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are March and April (75%).

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Average rainfall in May
Summerdale, PA

Average rainfall in May - Summerdale, PA
  • Average rainfall in May: 1.26"

The wettest month (with the highest rainfall) is August (1.3").
The driest months (with the least rainfall) are January and February (0.71").

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Average rainfall days in May
Summerdale, PA

Average rainfall days in May - Summerdale, PA
  • Average rainfall days in May: 13.9 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (5.7 days).

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Average snowfall in May
Summerdale, PA

Average snowfall in May - Summerdale, PA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Summerdale, PA

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

The month with the highest number of snowfall days is January (6.3 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
Summerdale, PA

Average daylight in May / Average sunshine in May - Summerdale, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in May
Summerdale, PA

Average sunshine days in May - Summerdale, PA
  • Average sunshine days in May: 14.5 days

The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (14.1 days).

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Average UV index in May
Summerdale, PA

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

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

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Average cloud cover in May
Summerdale, PA

Average cloud cover in May - Summerdale, PA
  • Average cloud cover in May: 46

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in May
Summerdale, PA

Average visibility in May - Summerdale, PA
  • Average visibility in May: 5mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

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Summerdale, Pennsylvania, USA

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