May weather forecast
Sylvester, PA

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Weather in May

The last month of the spring, May, is a comfortable month in Sylvester, Pennsylvania, with an average temperature ranging between min 45.7°F (7.6°C) and max 66.7°F (19.3°C).

Temperature

Sylvester sees a rise in temperature during May, with average high-temperatures transitioning from a cool 53.2°F (11.8°C) in April to a refreshing 66.7°F (19.3°C). The average temperature during May nights in Sylvester is registered at a frosty 45.7°F (7.6°C).

Humidity

The months with the lowest humidity in Sylvester are April through June, with an average relative humidity of 78%.

Rainfall

In May, the rain falls for 17.5 days. Throughout May, 2.56" (65mm) of precipitation is accumulated. Throughout the year, there are 168.3 rainfall days, and 28.19" (716mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.5 snowfall days, in May, Sylvester aggregates 0.2" (5mm) of snow. In Sylvester, during the entire year, snow falls for 80.4 days and aggregates up to 33.03" (839mm) of snow.

Daylight

In May, the average length of the day is 14h and 35min.
On the first day of the month, sunrise is at 6:05 am and sunset at 8:09 pm. On the last day of May, sunrise is at 5:37 am and sunset at 8:38 pm EDT.

Sunshine

In Sylvester, the average sunshine in May is 8.2h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index in Sylvester. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 5 in May leads to these recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May in Sylvester?

In Sylvester, 66.7°F (19.3°C) is the average high-temperature and 45.7°F (7.6°C) is the average low-temperature during May.

What is the least humid month in Sylvester?

The months with the lowest humidity are April through June, with an average relative humidity of 78%.

What is the average humidity in May in Sylvester?

The average relative humidity in May in Sylvester is 78%.

How much does it rain in Sylvester in May?

In Sylvester, during May, the rain falls for 17.5 days and regularly aggregates up to 2.56" (65mm) of precipitation.

What is the last month it snows in Sylvester?

May is the last month it regularly snows. During 0.5 snowfall days, in May, Sylvester aggregates 0.2" (5mm) of snow.

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

The average day length in May is 14h and 35min.

What time are sunrise and sunset in May in Sylvester?

On the first day of May in Sylvester, Pennsylvania, sunrise is at 6:05 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:38 pm EDT.

How many hours of sunshine does Sylvester have in May?

In Sylvester, Pennsylvania, the average sunshine duration in May is 8.2h.

What is the month with the highest UV index in Sylvester?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Sylvester.

What is the UV index reading in May in Sylvester?

In Sylvester, Pennsylvania, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate 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
Sylvester, PA

Average temperature in May - Sylvester, PA
  • Average high temperature in May: 66.7°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in May: 45.7°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

Average pressure in May
Sylvester, PA

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

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Sylvester, PA

Average wind speed in May - Sylvester, PA
  • Average wind speed in May: 7.6mph

The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in May
Sylvester, PA

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

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, May and June (78%).

Average rainfall in May
Sylvester, PA

Average rainfall in May - Sylvester, PA
  • Average rainfall in May: 2.56"

The wettest month (with the highest rainfall) is April (2.95").
The driest month (with the least rainfall) is November (1.81").

Average rainfall days in May
Sylvester, PA

Average rainfall days in May - Sylvester, PA
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is February (7.2 days).

Average snowfall in May
Sylvester, PA

Average snowfall in May - Sylvester, PA
  • Average snowfall in May: 0.2"

The month with the highest snowfall is February (7.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Sylvester, PA

Average snowfall days in May - Sylvester, PA
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Sylvester, PA
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 6min).

Average sunshine days in May
Sylvester, PA

Average sunshine days in May - Sylvester, PA
  • Average sunshine days in May: 11.2 days

The month with the most sunshine days is September (14.9 days).
The month with the least sunshine days is February (7.1 days).

Average UV index in May
Sylvester, PA

Average UV index in May - Sylvester, PA
  • Average UV index in May: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in May
Sylvester, PA

Average cloud cover in May - Sylvester, PA
  • Average cloud cover in May: 50

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 39).

Average visibility in May
Sylvester, PA

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

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

Sylvester, Pennsylvania, USA

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