May weather forecast
Bethel Park, PA

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Weather in May

The last month of the spring, May, is an agreeable month in Bethel Park, Pennsylvania, with an average temperature varying between 72.3°F (22.4°C) and 51.4°F (10.8°C).

Temperature

As Bethel Park, Pennsylvania, transitions into May, the average high-temperature shows a change, moving from an enjoyable 61.2°F (16.2°C) in April to a pleasant 72.3°F (22.4°C). In Bethel Park, an average nighttime temperature of 51.4°F (10.8°C) is expected during May.

Humidity

In May, the average relative humidity is 77%.

Rainfall

The month with the most rainfall is May, when the rain falls for 21.5 days and typically aggregates up to 3.66" (93mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Bethel Park. During 0.2 snowfall days, in May, Bethel Park aggregates 0.08" (2mm) of snow. Throughout the year, there are 60 snowfall days, and 23.31" (592mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 26min.
On the first day of May, sunrise is at 6:18 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:43 pm EDT.

Sunshine

The average sunshine in May is 8.9h.

UV index

The months with the highest UV index are May through July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: During May, 6 as the daily maximum UV index converts into the following advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. 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. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.

Frequently asked questions

What are the temperatures in May?

The high-temperature, in May, in Bethel Park, is 72.3°F (22.4°C), while the low-temperature averages to 51.4°F (10.8°C).

What is the average humidity in May?

The average relative humidity in May is 77%.

What is the rainiest month?

May is the month with the most rainfall. Rain falls for 21.5 days and accumulates 3.66" (93mm) of precipitation.

How many days does it rain in May?

In Bethel Park, in May, it is raining for 21.5 days, with typically 3.66" (93mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Bethel Park aggregates 0.08" (2mm) of snow.

What is the average length of the day in May?

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

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 6:18 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:43 pm EDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.9h.

What are the months with the highest UV index?

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

What is the UV index intensity in May?

In Bethel Park, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Bethel Park, PA

Average temperature in May - Bethel Park, PA
  • Average high temperature in May: 72.3°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 (33.4°F).

  • Average low temperature in May: 51.4°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in May
Bethel Park, PA

Average pressure in May - Bethel Park, PA
  • Average pressure in May: 30"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in May
Bethel Park, PA

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

The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in May
Bethel Park, PA

Average humidity in May - Bethel Park, PA
  • Average humidity in May: 77%

The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are July and August (75%).

Average rainfall in May
Bethel Park, PA

Average rainfall in May - Bethel Park, PA
  • Average rainfall in May: 3.66"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.2").

Average rainfall days in May
Bethel Park, PA

Average rainfall days in May - Bethel Park, PA
  • Average rainfall days in May: 21.5 days

The month with the highest number of rainy days is May (21.5 days).
The month with the least rainy days is February (11.3 days).

Average snowfall in May
Bethel Park, PA

Average snowfall in May - Bethel Park, PA
  • Average snowfall in May: 0.08"

The month with the highest snowfall is January (5.83").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Bethel Park, PA

Average snowfall days in May - Bethel Park, PA
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Bethel Park, PA

Average daylight in May / Average sunshine in May - Bethel Park, 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).

Average sunshine days in May
Bethel Park, PA

Average sunshine days in May - Bethel Park, PA
  • Average sunshine days in May: 8.6 days

The month with the most sunshine days is November (15.1 days).
The month with the least sunshine days is January (7.7 days).

Average UV index in May
Bethel Park, PA

Average UV index in May - Bethel Park, PA
  • Average UV index in May: 6

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

Average cloud cover in May
Bethel Park, PA

Average cloud cover in May - Bethel Park, PA
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in May
Bethel Park, PA

Average visibility in May - Bethel Park, 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 and February (4mi).

Bethel Park, Pennsylvania, USA

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