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 temperature change, with average high-temperatures moving from April's refreshing 57.4°F (14.1°C) to a pleasant 69.6°F (20.9°C). In Harrisville, May's nights observe an average temperature dip to a chilly 49.3°F (9.6°C).Humidity
The months with the lowest humidity are April through August, with an average relative humidity of 79%.Rainfall
In May, the rain falls for 19.5 days. Throughout May, 3.43" (87mm) of precipitation is accumulated. In Harrisville, during the entire year, the rain falls for 180.3 days and collects up to 35.39" (899mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.6 snowfall days, in May, Harrisville aggregates 0.35" (9mm) of snow. In Harrisville, during the entire year, snow falls for 79.6 days and aggregates up to 33.62" (854mm) of snow.Daylight
In May, the average length of the day is 14h and 31min.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 5:49 am and sunset at 8:45 pm EDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In May, the maximum UV index of 5 suggests this advice:
Heed the precautions - Suggestions to avoid sunburn are made. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the least humid month?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
When is the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Harrisville, PA
- Average high temperature in May: 69.6°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in May: 49.3°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in May
Harrisville, 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
Harrisville, 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
Harrisville, PA
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April, May, June, July and August (79%).
Average rainfall in May
Harrisville, PA
- Average rainfall in May: 3.43"
The wettest month (with the highest rainfall) is April (3.66").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in May
Harrisville, PA
- Average rainfall days in May: 19.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Harrisville, PA
- Average snowfall in May: 0.35"
The month with the highest snowfall is January (9.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Harrisville, PA
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is January (20.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Harrisville, 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 3min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in May
Harrisville, PA
- Average sunshine days in May: 9.3 days
The month with the most sunshine days is November (12.8 days).
The month with the least sunshine days is February (5.8 days).
Average UV index in May
Harrisville, 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
Harrisville, PA
- Average cloud cover in May: 47
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in May
Harrisville, 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).
Harrisville, Pennsylvania, USA
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