May weather forecastUnited, PA
May
Weather in May
May, the last month of the spring in United, is a pleasant month, with an average temperature fluctuating between 50°F (10°C) and 70.7°F (21.5°C).Temperature
United sees a rise in temperature during May, with average high-temperatures transitioning from a refreshing 59.5°F (15.3°C) in April to an agreeable 70.7°F (21.5°C). In May, United records an average nighttime temperature of 50°F (10°C).Humidity
In May, the average relative humidity in United is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 22 days and typically aggregates up to 3.66" (93mm) of precipitation.Snowfall
Months with snowfall in United are January through May, October through December. May is the last month it regularly snows. During 0.4 snowfall days, in May, United aggregates 0.16" (4mm) of snow. Throughout the year, there are 63.2 snowfall days, and 29.02" (737mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 26min.On the first day of the month, sunrise is at 6:16 am and sunset at 8:13 pm. On the last day of May, sunrise is at 5:50 am and sunset at 8:41 pm EDT.
Sunshine
In United, the average sunshine in May is 8.8h.UV index
In United, Pennsylvania, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 5 during May translates into the following directions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
United, PA
- Average high temperature in May: 70.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in May: 50°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in May
United, PA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
United, PA
- Average wind speed in May: 6.4mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in May
United, PA
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in May
United, PA
- Average rainfall in May: 3.66"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in May
United, PA
- Average rainfall days in May: 22 days
The month with the highest number of rainy days is May (22 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in May
United, PA
- Average snowfall in May: 0.16"
The month with the highest snowfall is January (7.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
United, PA
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
United, PA
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in May
United, PA
- Average sunshine days in May: 8 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.5 days).
Average UV index in May
United, 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, November and December (UV index 2).
Average cloud cover in May
United, PA
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
United, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
