Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Lancaster, Pennsylvania, sees an increase in the average high-temperature with the arrival of May, moving from April's refreshing 60.3°F (15.7°C) to an agreeable 70.3°F (21.3°C). In May, Lancaster encounters an average low-temperature of 52.5°F (11.4°C) during the night.Humidity
The most humid month is May, with an average relative humidity of 81%.Rainfall
In Lancaster, in May, it is raining for 17.8 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, in Lancaster, there are 153.4 rainfall days, and 28.27" (718mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May in Lancaster is 14h and 25min.On the first day of May in Lancaster, Pennsylvania, sunrise is at 6:04 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:27 pm EDT.
Sunshine
In May, the average sunshine is 8.2h.UV index
May through July, with an average maximum UV index of 6, are months with the highest UV index in Lancaster. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 6 in May leads to these recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the average May temperature in Lancaster?
What is the most humid month in Lancaster?
What is the average humidity in May in Lancaster?
How much does it rain in Lancaster in May?
When it does not snow in Lancaster?
Does it snow in Lancaster in May?
What is the average length of the day in May in Lancaster?
What time are sunrise and sunset in May in Lancaster?
How many hours of sunshine does Lancaster have in May?
When is the highest UV index in Lancaster?
What is the UV index reading in May in Lancaster?
Average temperature in May
Lancaster, PA
- Average high temperature in May: 70.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in May: 52.5°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in May
Lancaster, 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
Lancaster, PA
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is March (9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in May
Lancaster, PA
- Average humidity in May: 81%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in May
Lancaster, PA
- Average rainfall in May: 2.8"
The wettest month (with the highest rainfall) is August (3.35").
The driest months (with the least rainfall) are February and September (1.89").
Average rainfall days in May
Lancaster, PA
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (8 days).
Average snowfall in May
Lancaster, PA
- Average snowfall in May: 0"
The month with the highest snowfall is March (3.66").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Lancaster, PA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Lancaster, PA
- Average daylight in May: 14h and 2min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in May
Lancaster, PA
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in May
Lancaster, PA
- Average UV index in May: 6
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Lancaster, PA
- Average cloud cover in May: 48
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in May
Lancaster, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, October, November and December (6mi).
The months with the lowest visibility are May, August and September (5mi).
Lancaster, Pennsylvania, USA
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