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
As May sets, the average high-temperature shows an increase, moving up from a moderate 59.5°F (15.3°C) in April to an agreeable 70.7°F (21.5°C). Throughout the month of May, Keifertown witnesses an average low-temperature of 50°F (10°C).Humidity
The average relative humidity in May is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 22 days and typically aggregates up to 3.66" (93mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Keifertown. May is the last month it regularly snows. During 0.4 snowfall days, in May, Keifertown aggregates 0.16" (4mm) of snow. Throughout the year, in Keifertown, there are 63.2 snowfall days, and 29.02" (737mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 25min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:13 pm. On the last day of May, sunrise is at 5:51 am and sunset at 8:41 pm EDT.
Sunshine
In Keifertown, the average sunshine in May is 8.8h.UV index
In Keifertown, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 5 during May morphs into the following directions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Keifertown in May?
What is the average humidity in May in Keifertown?
What is the wettest month in Keifertown?
How much does it rain in Keifertown in May?
What is the last month it snows in Keifertown?
What is the average length of the day in May in Keifertown?
When is the sunrise / sunset in May in Keifertown?
How long on average sun shines in May in Keifertown?
What is the UV index intensity in May in Keifertown?
Average temperature in May
Keifertown, PA
- Average high temperature in May: 70.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in May: 50°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in May
Keifertown, PA
- Average pressure in May: 30"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
Keifertown, PA
- Average wind speed in May: 6.4mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in May
Keifertown, PA
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in May
Keifertown, PA
- Average rainfall in May: 3.66"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in May
Keifertown, PA
- Average rainfall days in May: 22 days
The month with the highest number of rainy days is May (22 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in May
Keifertown, PA
- Average snowfall in May: 0.16"
The month with the highest snowfall is January (7.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Keifertown, PA
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Keifertown, 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in May
Keifertown, PA
- Average sunshine days in May: 8 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.5 days).
Average UV index in May
Keifertown, PA
- Average UV index in May: 5
The month with the highest UV index is 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
Keifertown, PA
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Keifertown, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Keifertown, Pennsylvania, USA
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