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
The commencement of May sees a shift in the average high-temperature, moving from a mild 56.3°F (13.5°C) in April to an agreeable 68.5°F (20.3°C). Summerville encounters a steady low-temperature average of 47.8°F (8.8°C) throughout the month of May.Humidity
In May, the average relative humidity is 79%.Rainfall
In Summerville, in May, during 17.4 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Summerville, Pennsylvania, during the entire year, the rain falls for 150.5 days and collects up to 22.05" (560mm) of precipitation.Snowfall
Months with snowfall in Summerville, Pennsylvania, are January through May, October through December. May is the last month it regularly snows in Summerville. During 0.5 snowfall days, in May, Summerville aggregates 0.75" (19mm) of snow. In Summerville, during the entire year, snow falls for 72.4 days and aggregates up to 22.28" (566mm) of snow.Daylight
In May, the average length of the day is 14h and 30min.On the first day of May in Summerville, sunrise is at 6:13 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:42 pm EDT.
Sunshine
In Summerville, Pennsylvania, the average sunshine in May is 8.3h.UV index
The months with the highest UV index in Summerville are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In May, the UV index of 5 transforms into the following advice:
Be vigilant - Preventing sunburn is recommended. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What is the usual temperature for Summerville in May?
What is the average humidity in May in Summerville?
How much does it rain in Summerville in May?
What is the last month it snows in Summerville?
How many hours of daylight does Summerville have in May?
When is the sunrise / sunset in May in Summerville?
How long on average sun shines in May in Summerville?
When is the highest UV index in Summerville?
What is the UV index reading in May in Summerville?
Average temperature in May
Summerville, PA
- Average high temperature in May: 68.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in May: 47.8°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in May
Summerville, 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
Summerville, PA
- Average wind speed in May: 7mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in May
Summerville, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).
Average rainfall in May
Summerville, PA
- Average rainfall in May: 2.32"
The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in May
Summerville, PA
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in May
Summerville, PA
- Average snowfall in May: 0.75"
The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Summerville, PA
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Summerville, 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 30min).
Average sunshine days in May
Summerville, PA
- Average sunshine days in May: 10.9 days
The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in May
Summerville, 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
Summerville, PA
- Average cloud cover in May: 49
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in May
Summerville, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is February (4mi).
Summerville, Pennsylvania, USA
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