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 shift into May is characterized by a rise in the average high-temperature, transitioning from April's moderate 60.1°F (15.6°C) to a pleasant 70.3°F (21.3°C). In the month of May, an average of 51.4°F (10.8°C) marks the low-temperature.Humidity
In Mechanicsburg, Pennsylvania, the average relative humidity in May is 79%.Rainfall
In May, the rain falls for 13.9 days. Throughout May, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 122.3 rainfall days, and 11.73" (298mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May is 14h and 26min.On the first day of May, sunrise is at 6:06 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:31 pm EDT.
Sunshine
The average sunshine in May is 8.5h.UV index
May through July, 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 threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 6 during May leads to these advisories:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does Mechanicsburg have in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the month with the highest UV index?
How high is the UV index in May?
Average temperature in May
Mechanicsburg, PA
- Average high temperature in May: 70.3°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in May
Mechanicsburg, 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 (29.95"Hg).
Average wind speed in May
Mechanicsburg, PA
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in May
Mechanicsburg, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are March and April (75%).
Average rainfall in May
Mechanicsburg, PA
- Average rainfall in May: 1.26"
The wettest month (with the highest rainfall) is August (1.3").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in May
Mechanicsburg, PA
- Average rainfall days in May: 13.9 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in May
Mechanicsburg, PA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Mechanicsburg, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Mechanicsburg, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in May
Mechanicsburg, PA
- Average sunshine days in May: 14.5 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (14.1 days).
Average UV index in May
Mechanicsburg, 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, March, November and December (UV index 2).
Average cloud cover in May
Mechanicsburg, PA
- Average cloud cover in May: 46
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Mechanicsburg, 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).
Mechanicsburg, Pennsylvania, USA
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