May weather forecastWinfield, PA
May
Weather in May
The last month of the spring, May, is an agreeable month in Winfield, Pennsylvania, with an average temperature ranging between min 49.1°F (9.5°C) and max 69.4°F (20.8°C).Temperature
The onset of May brings a rise in the average high-temperature, elevating from a mild 57.9°F (14.4°C) in April to a pleasant 69.4°F (20.8°C). The nighttime temperature in Winfield, Pennsylvania, during May, averages of 49.1°F (9.5°C).Humidity
The average relative humidity in May is 80%.Rainfall
May is the month with the most rainfall. Rain falls for 16.7 days and accumulates 2.48" (63mm) of precipitation.Snowfall
In Winfield, snow does not fall in May through October.Daylight
The average length of the day in May is 14h and 29min.On the first day of May, sunrise is at 6:04 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:32 pm EDT.
Sunshine
In May, the average sunshine is 8.3h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: During May, 5 as the daily maximum UV index converts into the following advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Winfield, PA
- Average high temperature in May: 69.4°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in May: 49.1°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in May
Winfield, 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
Winfield, PA
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in May
Winfield, PA
- Average humidity in May: 80%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall in May
Winfield, PA
- Average rainfall in May: 2.48"
The wettest month (with the highest rainfall) is May (2.48").
The driest months (with the least rainfall) are November and December (1.18").
Average rainfall days in May
Winfield, PA
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (7.4 days).
Average snowfall in May
Winfield, PA
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Winfield, PA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Winfield, 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 18min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in May
Winfield, PA
- Average sunshine days in May: 11.9 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in May
Winfield, PA
- Average UV index in May: 5
The months with the highest UV index are June and 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
Winfield, PA
- Average cloud cover in May: 48
The months with the most cloud cover are February and December (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in May
Winfield, PA
- Average visibility in May: 5mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).





