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
May brings a temperature increase, with average high-temperatures moving from April's moderate 59.9°F (15.5°C) to a pleasant 70°F (21.1°C). During May, the nighttime temperature averages to a fresh 52°F (11.1°C).Humidity
The most humid month is May, with an average relative humidity of 81%.Rainfall
In Mount Joy, in May, it is raining for 15.7 days, with typically 1.5" (38mm) of accumulated precipitation. In Mount Joy, during the entire year, the rain falls for 132.7 days and collects up to 15.35" (390mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 25min.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 5:38 am and sunset at 8:28 pm EDT.
Sunshine
The average sunshine in May in Mount Joy is 8.4h.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 exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 during May leads to these advisories:
Exercise prevention - Warding off sunburn is urged. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What is the temperature in May in Mount Joy?
What is the most humid month in Mount Joy?
What is the average humidity in May in Mount Joy?
How much does it rain in Mount Joy in May?
When it does not snow in Mount Joy?
Does it snow in Mount Joy in May?
What is the average length of the day in May in Mount Joy?
What time are sunrise and sunset in May in Mount Joy?
How long on average sun shines in May in Mount Joy?
How high is the UV index in May in Mount Joy?
Average temperature in May
Mount Joy, PA
- Average high temperature in May: 70°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in May: 52°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in May
Mount Joy, 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
Mount Joy, PA
- Average wind speed in May: 6.6mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in May
Mount Joy, PA
- Average humidity in May: 81%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall in May
Mount Joy, PA
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is August (1.97").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in May
Mount Joy, PA
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is May (15.7 days).
The months with the least rainy days are January and November (6.6 days).
Average snowfall in May
Mount Joy, PA
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Mount Joy, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Mount Joy, 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 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 30min).
Average sunshine days in May
Mount Joy, PA
- Average sunshine days in May: 12.6 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in May
Mount Joy, 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
Mount Joy, PA
- Average cloud cover in May: 46
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Mount Joy, 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).
Mount Joy, Pennsylvania, USA
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