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
The beginning of May signals a rise in the average high-temperature, moving from a refreshing 62.6°F (17°C) in April to a pleasant 72.3°F (22.4°C). Mercersville observes an average low-temperature of 52.3°F (11.3°C) during May nights.Humidity
The months with the highest humidity are May, October and December, with an average relative humidity of 79%.Rainfall
In Mercersville, during May, the rain falls for 18.3 days and regularly aggregates up to 3.23" (82mm) of precipitation. In Mercersville, during the entire year, the rain falls for 162.4 days and collects up to 30.16" (766mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day in Mercersville is 14h and 22min.On the first day of the month, sunrise is at 6:10 am and sunset at 8:05 pm. On the last day of May, sunrise is at 5:45 am and sunset at 8:31 pm EDT.
Sunshine
The average sunshine in May is 8.4h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Mercersville. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What is the usual temperature for Mercersville in May?
What are the most humid months in Mercersville?
What is the average humidity in May in Mercersville?
How many days does it rain in May in Mercersville?
When it does not snow in Mercersville?
Does it snow in Mercersville in May?
How many hours of daylight does Mercersville have in May?
What time are sunrise and sunset in May in Mercersville?
How long on average sun shines in May in Mercersville?
When is the highest UV index in Mercersville?
How high is the UV index in May in Mercersville?
Average temperature in May
Mercersville, MD
- Average high temperature in May: 72.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in May
Mercersville, MD
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Mercersville, MD
- Average wind speed in May: 5.9mph
The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in May
Mercersville, MD
- Average humidity in May: 79%
The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).
Average rainfall in May
Mercersville, MD
- Average rainfall in May: 3.23"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in May
Mercersville, MD
- Average rainfall days in May: 18.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in May
Mercersville, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.72").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Mercersville, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Mercersville, MD
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 2min
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 42min).
Average sunshine days in May
Mercersville, MD
- Average sunshine days in May: 11.4 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is April (11 days).
Average UV index in May
Mercersville, MD
- 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, November and December (UV index 2).
Average cloud cover in May
Mercersville, MD
- Average cloud cover in May: 47
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Mercersville, MD
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Mercersville, Maryland, USA
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