May weather forecastSewickley Heights, PA
May
Weather in May
The last month of the spring, May, is an agreeable month in Sewickley Heights, Pennsylvania, with an average temperature varying between 71.6°F (22°C) and 51.1°F (10.6°C).Temperature
With the onset of May, Sewickley Heights's weather sees a temperature rise, transitioning from a refreshing 60.1°F (15.6°C) in April to a pleasant 71.6°F (22°C). In May, the temperature drops to an average of 51.1°F (10.6°C) at night.Humidity
In Sewickley Heights, the average relative humidity in May is 77%.Rainfall
In Sewickley Heights, in May, it is raining for 12.7 days, with typically 0.87" (22mm) of accumulated precipitation. In Sewickley Heights, Pennsylvania, during the entire year, the rain falls for 104.1 days and collects up to 8.23" (209mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Sewickley Heights aggregates 0.04" (1mm) of snow. In Sewickley Heights, Pennsylvania, during the entire year, snow falls for 33.9 days and aggregates up to 4.37" (111mm) of snow.Daylight
The average length of the day in May is 14h and 27min.On the first day of May in Sewickley Heights, sunrise is at 6:18 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:44 pm EDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
In Sewickley Heights, Pennsylvania, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 5 transforms into these recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Sewickley Heights, PA
- Average high temperature in May: 71.6°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in May: 51.1°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 (20.1°F).
Average pressure in May
Sewickley Heights, PA
- Average pressure in May: 29.99"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
Sewickley Heights, PA
- Average wind speed in May: 6.1mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in May
Sewickley Heights, PA
- Average humidity in May: 77%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall in May
Sewickley Heights, PA
- Average rainfall in May: 0.87"
The wettest months (with the highest rainfall) are June and July (0.91").
The driest months (with the least rainfall) are January and November (0.47").
Average rainfall days in May
Sewickley Heights, PA
- Average rainfall days in May: 12.7 days
The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in May
Sewickley Heights, PA
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Sewickley Heights, PA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is February (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
Sewickley Heights, PA
- Average daylight in May: 14h and 30min
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 18min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in May
Sewickley Heights, PA
- Average sunshine days in May: 14.7 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is May (14.7 days).
Average UV index in May
Sewickley Heights, PA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Sewickley Heights, PA
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Sewickley Heights, PA
- Average visibility in May: 5mi
The months with the highest visibility are April, June, August and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September, October and December (5mi).
