May weather forecastDowningtown, PA
May
Weather in May
The Month of May experiences an advent of summer, with temperatures jumping significantly high to around 70.9°F (21.6°C). Following April’s showers, May ushers in vibrant spring colors in Downingtown, with Nature in full bloom. This month also brings an increase in daylight hours, adding more sunshine to the city's pleasant weather. The anticipation of even warmer temperatures and longer days keeps Downingtown residents excited for the upcoming summer month, June.Temperature
May's arrival coincides with a temperature rise, moving from April's moderate 60.3°F (15.7°C) to an agreeable 70.9°F (21.6°C). In the month of May, Downingtown experiences an average low-temperature of 52.3°F (11.3°C).Humidity
The months with the highest humidity are February, May and October, with an average relative humidity of 80%.Rainfall
In Downingtown, during May, the rain falls for 16.8 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 145.6 rainfall days, and 26.81" (681mm) of precipitation is accumulated.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, Downingtown aggregates 0.12" (3mm) of snow. Throughout the year, there are 17.2 snowfall days, and 10.47" (266mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 25min.On the first day of May in Downingtown, Pennsylvania, sunrise is at 6:01 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:25 pm EDT.
Sunshine
In Downingtown, the average sunshine in May is 8.3h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In May, an average UV index of 6 transforms into the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Downingtown, PA
- Average high temperature in May: 70.9°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in May
Downingtown, 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
Downingtown, PA
- Average wind speed in May: 6.5mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in May
Downingtown, PA
- Average humidity in May: 80%
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in May
Downingtown, PA
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days in May
Downingtown, PA
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in May
Downingtown, PA
- Average snowfall in May: 0.12"
The month with the highest snowfall is March (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Downingtown, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Downingtown, 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 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Downingtown, PA
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in May
Downingtown, PA
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (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
Downingtown, PA
- Average cloud cover in May: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Downingtown, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
