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's arrival in Harrisburg signals an increase in average high-temperatures, moving from April's refreshing 60.1°F (15.6°C) to a pleasant 70.3°F (21.3°C). May's average low-temperature reading settles at a cool 51.4°F (10.8°C).Humidity
In May, the average relative humidity is 79%.Rainfall
In Harrisburg, in May, during 13.9 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, there are 122.3 rainfall days, and 11.73" (298mm) of precipitation is accumulated.Snowfall
In Harrisburg, snow does not fall in May through October.Daylight
In May, the average length of the day is 14h and 26min.On the first day of May in Harrisburg, sunrise is at 6:05 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:30 pm EDT.
Sunshine
The average sunshine in May in Harrisburg 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 exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 6 in May translates into this advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the usual temperature for Harrisburg in May?
What is the average humidity in May in Harrisburg?
How much does it rain in Harrisburg in May?
When it does not snow in Harrisburg?
Does it snow in Harrisburg in May?
What is the average length of the day in May in Harrisburg?
When is the sunrise / sunset in May in Harrisburg?
How long on average sun shines in May in Harrisburg?
What is the month with the highest UV index in Harrisburg?
What is the UV index reading in May in Harrisburg?
Average temperature in May
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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
Harrisburg, 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).
Harrisburg, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
