May weather forecastHaynes Mill, PA
May
Weather in May
The last month of the spring, May, is an agreeable month in Haynes Mill, Pennsylvania, with temperature in the range of an average high of 68.7°F (20.4°C) and an average low of 49.6°F (9.8°C).Temperature
As Haynes Mill welcomes May, the average high-temperature sees a rise, transitioning from a moderate 57.7°F (14.3°C) in April to an agreeable 68.7°F (20.4°C). In May, the temperature in Haynes Mill drops to an average of 49.6°F (9.8°C) at night.Humidity
The average relative humidity in May is 79%.Rainfall
In Haynes Mill, in May, it is raining for 17.8 days, with typically 3.03" (77mm) of accumulated precipitation. In Haynes Mill, during the entire year, the rain falls for 167 days and collects up to 33.5" (851mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Haynes Mill aggregates 0.16" (4mm) of snow. Throughout the year, there are 33.8 snowfall days, and 17.91" (455mm) of snow is accumulated.Daylight
In Haynes Mill, the average length of the day in May is 14h and 28min.On the first day of May, sunrise is at 5:58 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:26 pm EDT.
Sunshine
In May, the average sunshine is 8.3h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index in Haynes Mill. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 5 in May leads to these recommendations:
Take precautions - Protection against skin and eye damage is obliged. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Haynes Mill, PA
- Average high temperature in May: 68.7°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in May
Haynes Mill, 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
Haynes Mill, PA
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Haynes Mill, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in May
Haynes Mill, PA
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is July (3.46").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in May
Haynes Mill, PA
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (9.9 days).
Average snowfall in May
Haynes Mill, PA
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Haynes Mill, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Haynes Mill, 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 18min).
- Average sunshine in May: 8h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in May
Haynes Mill, PA
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in May
Haynes Mill, 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
Haynes Mill, PA
- Average cloud cover in May: 48
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in May
Haynes Mill, 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).
