May weather forecastSlate Run, PA
May
Weather in May
May, the last month of the spring in Slate Run, is a refreshing month, with an average temperature ranging between min 46.4°F (8°C) and max 67.5°F (19.7°C).Temperature
May's arrival sees a rise in the average high-temperature, jumping from April's cool 54.3°F (12.4°C) to a refreshing 67.5°F (19.7°C). Slate Run observes an average low-temperature of 46.4°F (8°C) during May nights.Humidity
In Slate Run, the average relative humidity in May is 79%.Rainfall
In May, the rain falls for 18.8 days. Throughout May, 3.23" (82mm) of precipitation is accumulated. In Slate Run, Pennsylvania, during the entire year, the rain falls for 168.8 days and collects up to 32.56" (827mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.7 snowfall days, in May, Slate Run aggregates 0.59" (15mm) of snow. Throughout the year, there are 71.6 snowfall days, and 35.47" (901mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 32min.On the first day of May, sunrise is at 6:05 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:36 pm EDT.
Sunshine
The average sunshine in May is 7.8h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 5 in May suggests the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Boost your sun resistance with garments that are densely woven yet spacious. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Slate Run, PA
- Average high temperature in May: 67.5°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in May: 46.4°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in May
Slate Run, PA
- Average pressure in May: 30.01"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
Slate Run, PA
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in May
Slate Run, 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 (77%).
Average rainfall in May
Slate Run, PA
- Average rainfall in May: 3.23"
The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in May
Slate Run, PA
- Average rainfall days in May: 18.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in May
Slate Run, PA
- Average snowfall in May: 0.59"
The month with the highest snowfall is February (9.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Slate Run, PA
- Average snowfall days in May: 0.7 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
Slate Run, PA
- Average daylight in May: 14h and 30min
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: 7h and 48min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The months with the least sunshine are January and December (Average sunshine: 3h and 0min).
Average sunshine days in May
Slate Run, PA
- Average sunshine days in May: 10.2 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in May
Slate Run, 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
Slate Run, PA
- Average cloud cover in May: 53
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 41).
Average visibility in May
Slate Run, PA
- Average visibility in May: 5mi
The months with the highest visibility are March, April, May, June, July and November (5mi).
The months with the lowest visibility are January, February, August, September, October and December (4mi).
