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
With the onset of May, Harleigh's average high-temperature sees a rise, moving from April's moderate 55.4°F (13°C) to a still refreshing 66.7°F (19.3°C). In May, Harleigh reports a consistent average low-temperature of 48.2°F (9°C) during the nights.Humidity
The average relative humidity in May is 81%.Rainfall
The month with the most rainfall is May, when the rain falls for 19.8 days and typically aggregates up to 3.43" (87mm) of precipitation.Snowfall
Months with snowfall in Harleigh, Pennsylvania, are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Harleigh aggregates 0.63" (16mm) of snow. In Harleigh, during the entire year, snow falls for 53.8 days and aggregates up to 33.66" (855mm) of snow.Daylight
The average length of the day in May is 14h and 29min.On the first day of May, sunrise is at 6:00 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:29 pm EDT.
Sunshine
In Harleigh, the average sunshine in May is 7.7h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Harleigh in May?
What is the average humidity in May?
What is the wettest month in Harleigh?
How many days does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Harleigh have in May?
What is the month with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Harleigh, PA
- Average high temperature in May: 66.7°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in May: 48.2°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Harleigh, PA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Harleigh, PA
- Average wind speed in May: 6.6mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in May
Harleigh, PA
- Average humidity in May: 81%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (78%).
Average rainfall in May
Harleigh, PA
- Average rainfall in May: 3.43"
The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in May
Harleigh, PA
- Average rainfall days in May: 19.8 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in May
Harleigh, PA
- Average snowfall in May: 0.63"
The months with the highest snowfall are January and February (7.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Harleigh, PA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is February (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Harleigh, PA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in May
Harleigh, PA
- Average sunshine days in May: 8.7 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (8.7 days).
Average UV index in May
Harleigh, PA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Harleigh, PA
- Average cloud cover in May: 52
The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in May
Harleigh, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Harleigh, Pennsylvania, USA
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