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 April gives way to May, the average high-temperature displays an increase, moving from a moderate 57.9°F (14.4°C) to a pleasant 70.2°F (21.2°C). An average low-temperature of 49.3°F (9.6°C) is expected during May.Humidity
The months with the lowest humidity in Slippery Rock are April through August, with an average relative humidity of 79%.Rainfall
In Slippery Rock, in May, during 19.8 rainfall days, 3.7" (94mm) of precipitation is typically accumulated. In Slippery Rock, Pennsylvania, during the entire year, the rain falls for 177.8 days and collects up to 36.65" (931mm) of precipitation.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, Slippery Rock aggregates 0.35" (9mm) of snow. In Slippery Rock, during the entire year, snow falls for 75.3 days and aggregates up to 32.05" (814mm) of snow.Daylight
In May, the average length of the day is 14h and 30min.On the first day of the month, sunrise is at 6:16 am and sunset at 8:17 pm. On the last day of May, sunrise is at 5:50 am and sunset at 8:45 pm EDT.
Sunshine
In Slippery Rock, Pennsylvania, the average sunshine in May is 8.3h.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 medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 5 during May translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What is the usual temperature for Slippery Rock in May?
What is the least humid month in Slippery Rock?
What is the average humidity in May in Slippery Rock?
How many days does it rain in May in Slippery Rock?
What is the last month it snows in Slippery Rock?
What is the average length of the day in May in Slippery Rock?
When is the sunrise / sunset in May in Slippery Rock?
How long on average sun shines in May in Slippery Rock?
What is the month with the highest UV index in Slippery Rock?
How high is the UV index in May in Slippery Rock?
Average temperature in May
Slippery Rock, PA
- Average high temperature in May: 70.2°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in May: 49.3°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in May
Slippery Rock, PA
- Average pressure in May: 29.99"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
Slippery Rock, PA
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in May
Slippery Rock, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, May, June, July and August (79%).
Average rainfall in May
Slippery Rock, PA
- Average rainfall in May: 3.7"
The wettest month (with the highest rainfall) is April (3.74").
The driest month (with the least rainfall) is November (2.36").
Average rainfall days in May
Slippery Rock, PA
- Average rainfall days in May: 19.8 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in May
Slippery Rock, PA
- Average snowfall in May: 0.35"
The month with the highest snowfall is January (8.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Slippery Rock, PA
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Slippery Rock, 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 18min).
- Average sunshine in May: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in May
Slippery Rock, PA
- Average sunshine days in May: 9.3 days
The month with the most sunshine days is November (13.1 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in May
Slippery Rock, PA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Slippery Rock, PA
- Average cloud cover in May: 49
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in May
Slippery Rock, PA
- Average visibility in May: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
Slippery Rock, Pennsylvania, USA
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