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 onset is marked by a temperature increase, moving from a refreshing 61.5°F (16.4°C) in April to an agreeable 72°F (22.2°C). Throughout May, an average nighttime temperature of 52°F (11.1°C) is experienced.Humidity
May and October, with an average relative humidity of 79%, are the most humid months.Rainfall
May is the month with the most rainfall. Rain falls for 18.3 days and accumulates 3.11" (79mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 23min.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 5:44 am and sunset at 8:32 pm EDT.
Sunshine
The average sunshine in May is 8.6h.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 average individuals.Note: The UV index of 6 during May leads to these advisories:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the most humid month?
What is the average humidity in May?
What is the wettest month?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does State Line have in May?
When is the sunrise / sunset in May?
How many hours of sunshine does State Line have in May?
What are the months with the highest UV index?
How high is the UV index in May?
Average temperature in May
State Line, PA
- Average high temperature in May: 72°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in May: 52°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in May
State Line, PA
- 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
State Line, PA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in May
State Line, PA
- Average humidity in May: 79%
The months with the highest relative humidity are May and October (79%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in May
State Line, PA
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.97").
Average rainfall days in May
State Line, PA
- 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 January (8.8 days).
Average snowfall in May
State Line, PA
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
State Line, PA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (9 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
State Line, PA
- 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 4min
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
State Line, PA
- Average sunshine days in May: 10.7 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in May
State Line, 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, November and December (UV index 2).
Average cloud cover in May
State Line, PA
- Average cloud cover in May: 46
The months with the most cloud cover are January, February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
State Line, PA
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, February, March, May, September and October (5mi).
State Line, Pennsylvania, USA
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