May weather forecast
Charleroi, PA

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Weather in May

May, the last month of the spring in Charleroi, is an agreeable month, with temperature in the range of an average high of 72.1°F (22.3°C) and an average low of 51.6°F (10.9°C).

Temperature

Charleroi in May experiences an increase in the average high-temperature, moving from April's moderate 60.6°F (15.9°C) to an agreeable 72.1°F (22.3°C). An average low-temperature of 51.6°F (10.9°C) is noted during the nights in May.

Humidity

The average relative humidity in May is 78%.

Rainfall

The month with the most rainfall in Charleroi is May, when the rain falls for 21.8 days and typically aggregates up to 3.78" (96mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Charleroi aggregates 0.12" (3mm) of snow. Throughout the year, there are 60.2 snowfall days, and 25.08" (637mm) of snow is accumulated.

Daylight

In Charleroi, the average length of the day in May is 14h and 25min.
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 8:42 pm EDT.

Sunshine

In Charleroi, 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 health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 6 in May translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

In Charleroi, 72.1°F (22.3°C) is the average high-temperature and 51.6°F (10.9°C) is the average low-temperature during May.

What is the average humidity in May?

The average relative humidity in May is 78%.

What is the rainiest month in Charleroi?

The month with the most rainfall is May, when the rain falls for 21.8 days and typically aggregates up to 3.78" (96mm) of precipitation.

How much does it rain in May?

In May, the rain falls for 21.8 days. Throughout May, 3.78" (96mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Charleroi aggregates 0.12" (3mm) of snow.

How many hours of daylight does Charleroi have in May?

In May, the average day length is 14h and 25min.

What time are sunrise and sunset in May?

In May, on the first day of the month, 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 8:42 pm EDT.

How long on average sun shines in May?

In Charleroi, the average sunshine duration in May is 8.9h.

What are the months with the highest UV index?

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

How high is the UV index in May?

In Charleroi, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
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
Charleroi, PA

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

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in May: 51.6°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

Average pressure in May
Charleroi, PA

Average pressure in May - Charleroi, 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
Charleroi, PA

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

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in May
Charleroi, PA

Average humidity in May - Charleroi, PA
  • Average humidity in May: 78%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (76%).

Average rainfall in May
Charleroi, PA

Average rainfall in May - Charleroi, PA
  • Average rainfall in May: 3.78"

The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is November (2.13").

Average rainfall days in May
Charleroi, PA

Average rainfall days in May - Charleroi, PA
  • Average rainfall days in May: 21.8 days

The month with the highest number of rainy days is May (21.8 days).
The months with the least rainy days are January and February (11.7 days).

Average snowfall in May
Charleroi, PA

Average snowfall in May - Charleroi, PA
  • Average snowfall in May: 0.12"

The month with the highest snowfall is January (6.26").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Charleroi, PA

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

The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Charleroi, 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
Charleroi, PA

Average sunshine days in May - Charleroi, PA
  • Average sunshine days in May: 8.2 days

The month with the most sunshine days is November (14.3 days).
The month with the least sunshine days is January (6.8 days).

Average UV index in May
Charleroi, PA

Average UV index in May - Charleroi, 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
Charleroi, PA

Average cloud cover in May - Charleroi, 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
Charleroi, PA

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

The months with the highest visibility are April, August and November (6mi).
The months with the lowest visibility are January and February (4mi).

Charleroi, Pennsylvania, USA

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