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
May brings a rise in Rock Glen's average high-temperature, moving from 55.8°F (13.2°C) in April to a still refreshing 67.1°F (19.5°C). During the month of May, Rock Glen anticipates a mean low-temperature of 48°F (8.9°C).Humidity
In Rock Glen, the average relative humidity in May is 81%.Rainfall
The month with the most rainfall is May, when the rain falls for 13.8 days and typically aggregates up to 1.26" (32mm) of precipitation.Snowfall
Months with snowfall in Rock Glen are January through May, October through December. May is the last month it regularly snows in Rock Glen. During 0.1 snowfall days, in May, Rock Glen aggregates 0.16" (4mm) of snow. In Rock Glen, during the entire year, snow falls for 31.5 days and aggregates up to 7.28" (185mm) of snow.Daylight
In May, the average length of the day is 14h and 29min.On the first day of May in Rock Glen, Pennsylvania, sunrise is at 6:01 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:30 pm EDT.
Sunshine
The average sunshine in May is 7.7h.UV index
In Rock Glen, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 5 during May translates into these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
What is the temperature in May in Rock Glen?
What is the average humidity in May in Rock Glen?
What is the wettest month in Rock Glen?
How much does it rain in Rock Glen in May?
What is the last month it snows in Rock Glen?
How many hours of daylight does Rock Glen have in May?
When is the sunrise / sunset in May in Rock Glen?
How many hours of sunshine does Rock Glen have in May?
What is the UV index intensity in May in Rock Glen?
Average temperature in May
Rock Glen, PA
- Average high temperature in May: 67.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in May: 48°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Rock Glen, PA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Rock Glen, PA
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in May
Rock Glen, PA
- Average humidity in May: 81%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (78%).
Average rainfall in May
Rock Glen, PA
- Average rainfall in May: 1.26"
The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in May
Rock Glen, PA
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in May
Rock Glen, PA
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Rock Glen, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rock Glen, 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: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in May
Rock Glen, PA
- Average sunshine days in May: 14.3 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is May (14.3 days).
Average UV index in May
Rock Glen, PA
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Rock Glen, PA
- Average cloud cover in May: 52
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in May
Rock Glen, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Rock Glen, Pennsylvania, USA
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