Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As May begins, there is an increase in the average high-temperature, moving from a cool 53.6°F (12°C) in April to a refreshing 66.6°F (19.2°C). Union Center's temperature drops to an average low of 46.6°F (8.1°C) during the nights of May.Humidity
The average relative humidity in May is 79%.Rainfall
In Union Center, in May, it is raining for 17.7 days, with typically 2.91" (74mm) of accumulated precipitation. Throughout the year, there are 156.3 rainfall days, and 29.25" (743mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.4 snowfall days, in May, Union Center aggregates 0.39" (10mm) of snow. In Union Center, Pennsylvania, during the entire year, snow falls for 63.2 days and aggregates up to 33.23" (844mm) of snow.Daylight
In Union Center, the average length of the day in May is 14h and 33min.On the first day of May, sunrise is at 6:03 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:35 pm EDT.
Sunshine
In Union Center, 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. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 5 in May transforms into this advice:
Ensure safety - Recommendations to avert sunburn are presented. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Union Center?
What is the average humidity in May in Union Center?
How many days does it rain in May in Union Center?
What is the last month it snows in Union Center?
What is the average length of the day in May in Union Center?
What time are sunrise and sunset in May in Union Center?
How long on average sun shines in May in Union Center?
What is the month with the highest UV index in Union Center?
What is the UV index intensity in May in Union Center?
Average temperature in May
Union Center, PA
- Average high temperature in May: 66.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in May: 46.6°F
The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in May
Union Center, PA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Union Center, PA
- Average wind speed in May: 7mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in May
Union Center, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (78%).
Average rainfall in May
Union Center, PA
- Average rainfall in May: 2.91"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in May
Union Center, PA
- Average rainfall days in May: 17.7 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in May
Union Center, PA
- Average snowfall in May: 0.39"
The month with the highest snowfall is February (7.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Union Center, PA
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Union Center, PA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
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: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 12min).
Average sunshine days in May
Union Center, PA
- Average sunshine days in May: 10.9 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in May
Union Center, 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
Union Center, PA
- Average cloud cover in May: 50
The months with the most cloud cover are January and December (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in May
Union Center, 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).
Union Center, Pennsylvania, USA
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