May weather forecast
McKeesport, PA

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Weather in May

May in McKeesport witnesses a significant warm-up, inviting vibrant springtime activities. Temperatures rise, and the city’s parks and outdoor spaces teem with people, mirth, and merriment. As an indication of the gently rising thermals, the rainfall peaks at 1.26" (32mm), marking the wettest month of the year. Despite this, sunshine hours increase, fostering comfortable outdoor pursuits. The end of the month sees the city transition into summer mode.

Temperature

McKeesport's weather in May shows a rise in the average high-temperature, moving up from April's mild 60.4°F (15.8°C) to a pleasant 72.1°F (22.3°C). McKeesport anticipates an average minimum temperature of 51.4°F (10.8°C) in the month of May.

Humidity

In McKeesport, the average relative humidity in May is 77%.

Rainfall

The month with the most rainfall in McKeesport is May, when the rain falls for 15 days and typically aggregates up to 1.26" (32mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, McKeesport aggregates 0.04" (1mm) of snow. In McKeesport, during the entire year, snow falls for 50 days and aggregates up to 6.69" (170mm) of snow.

Daylight

In McKeesport, the average length of the day in May is 14h and 26min.
On the first day of the month, sunrise is at 6:17 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:51 am and sunset at 8:42 pm EDT.

Sunshine

In May, the average sunshine in McKeesport is 8.9h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in McKeesport. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in May converts into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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Frequently asked questions

What is the temperature in May in McKeesport?

May temperatures vary between a high-temperature of 72.1°F (22.3°C) and a low-temperature of 51.4°F (10.8°C).

What is the average humidity in May in McKeesport?

The average relative humidity in May is 77%.

What is the wettest month in McKeesport?

The month with the most rainfall in McKeesport is May, when the rain falls for 15 days and typically aggregates up to 1.26" (32mm) of precipitation.

How much does it rain in McKeesport in May?

In McKeesport, in May, during 15 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

What is the last month it snows in McKeesport?

May is the last month it regularly snows in McKeesport. During 0.2 snowfall days, in May, McKeesport aggregates 0.04" (1mm) of snow.

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

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

When is the sunrise / sunset in May in McKeesport?

On the first day of May in McKeesport, Pennsylvania, sunrise is at 6:17 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:42 pm EDT.

How many hours of sunshine does McKeesport have in May?

The average sunshine duration in May in McKeesport is 8.9h.

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

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

What is the UV index intensity in May in McKeesport?

In May, the average daily maximum UV index in McKeesport is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
McKeesport, PA

Average temperature in May - McKeesport, PA
  • Average high temperature in May: 72.1°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in May: 51.4°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in May
McKeesport, PA

Average pressure in May - McKeesport, PA
  • Average pressure in May: 30"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
McKeesport, PA

Average wind speed in May - McKeesport, PA
  • Average wind speed in May: 6mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in May
McKeesport, PA

Average humidity in May - McKeesport, PA
  • Average humidity in May: 77%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (74%).

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Average rainfall in May
McKeesport, PA

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

The wettest month (with the highest rainfall) is May (1.26").
The driest months (with the least rainfall) are September and November (0.55").

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Average rainfall days in May
McKeesport, PA

Average rainfall days in May - McKeesport, PA
  • Average rainfall days in May: 15 days

The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is February (7.1 days).

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Average snowfall in May
McKeesport, PA

Average snowfall in May - McKeesport, PA
  • Average snowfall in May: 0.04"

The months with the highest snowfall are January and February (1.65").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
McKeesport, PA

Average snowfall days in May - McKeesport, PA
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - McKeesport, 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 5min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in May
McKeesport, PA

Average sunshine days in May - McKeesport, PA
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12.3 days).

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Average UV index in May
McKeesport, PA

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

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
McKeesport, PA

Average cloud cover in May - McKeesport, PA
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in May
McKeesport, PA

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

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

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McKeesport, Pennsylvania, USA

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