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 average high-temperature increases in May, moving from a mild 56.5°F (13.6°C) in April to an agreeable 68.5°F (20.3°C). In West Decatur, in May, the average low-temperature is a chilly 48°F (8.9°C).Humidity
In May, the average relative humidity is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 17.9 days and typically aggregates up to 2.87" (73mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.5 snowfall days, in May, West Decatur aggregates 0.67" (17mm) of snow. In West Decatur, during the entire year, snow falls for 67.7 days and aggregates up to 23.54" (598mm) of snow.Daylight
In May, the average length of the day is 14h and 29min.On the first day of May, sunrise is at 6:10 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:38 pm EDT.
Sunshine
In West Decatur, the average sunshine in May is 8.3h.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 rays for the ordinary person.Note: The UV index of 5 during May leads to these advisories:
Exercise prevention - Warding off sunburn is urged. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. 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 temperature in May?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May in West Decatur?
What is the last month it snows?
What is the average length of the day in May in West Decatur?
What time are sunrise and sunset in May?
How many hours of sunshine does West Decatur have in May?
What is the month with the highest UV index?
What is the UV index reading in May?
Average temperature in May
West Decatur, PA
- Average high temperature in May: 68.5°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in May: 48°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in May
West Decatur, 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
West Decatur, PA
- Average wind speed in May: 6.6mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
West Decatur, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is July (76%).
Average rainfall in May
West Decatur, PA
- Average rainfall in May: 2.87"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is November (1.42").
Average rainfall days in May
West Decatur, PA
- Average rainfall days in May: 17.9 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in May
West Decatur, PA
- Average snowfall in May: 0.67"
The month with the highest snowfall is January (6.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
West Decatur, PA
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
West Decatur, 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: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in May
West Decatur, PA
- Average sunshine days in May: 11 days
The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is February (8.7 days).
Average UV index in May
West Decatur, 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
West Decatur, PA
- Average cloud cover in May: 49
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in May
West Decatur, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February and September (4mi).
West Decatur, Pennsylvania, USA
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