May weather forecastWest Jonestown, PA
May
Weather in May
The last month of the spring, May, is a pleasant month in West Jonestown, Pennsylvania, with an average temperature fluctuating between 68.7°F (20.4°C) and 50.7°F (10.4°C).Temperature
In West Jonestown, stepping into May brings a temperature increase, moving up from April's moderate 58.8°F (14.9°C) to an agreeable 68.7°F (20.4°C). The nighttime temperature, during May, averages of 50.7°F (10.4°C).Humidity
The months with the highest humidity in West Jonestown are February, May, June and October, with an average relative humidity of 81%.Rainfall
The months with the most rainfall are May and July, with an average 3.58" (91mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, West Jonestown aggregates 0.2" (5mm) of snow. In West Jonestown, during the entire year, snow falls for 32.4 days and aggregates up to 16.69" (424mm) of snow.Daylight
In West Jonestown, the average length of the day in May is 14h and 26min.On the first day of May, sunrise is at 6:04 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:29 pm EDT.
Sunshine
The average sunshine in May in West Jonestown is 8h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 5 during May translates into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. 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
West Jonestown, PA
- Average high temperature in May: 68.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in May: 50.7°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in May
West Jonestown, 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
West Jonestown, PA
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in May
West Jonestown, PA
- Average humidity in May: 81%
The months with the highest relative humidity are February, May, June and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in May
West Jonestown, PA
- Average rainfall in May: 3.58"
The wettest months (with the highest rainfall) are May and July (3.58").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in May
West Jonestown, PA
- Average rainfall days in May: 18.6 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in May
West Jonestown, PA
- Average snowfall in May: 0.2"
The month with the highest snowfall is January (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
West Jonestown, PA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
West Jonestown, 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 18min).
- Average sunshine in May: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in May
West Jonestown, PA
- Average sunshine days in May: 10.1 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in May
West Jonestown, PA
- Average UV index in May: 5
The month with the highest UV index is June (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
West Jonestown, PA
- Average cloud cover in May: 49
The months with the most cloud cover are February and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in May
West Jonestown, PA
- Average visibility in May: 5mi
The months with the highest visibility are March, April, June, July and November (6mi).
The months with the lowest visibility are January, February, May, August, September, October and December (5mi).
