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 brings a temperature shift, moving from a refreshing 57.2°F (14°C) in April to a pleasant 68.2°F (20.1°C). Helfenstein experiences an average low-temperature reading of 49.3°F (9.6°C) throughout May.Humidity
In May, the average relative humidity is 81%.Rainfall
The months with the most rainfall are May and July, with an average 1.97" (50mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Helfenstein aggregates 0.12" (3mm) of snow. Throughout the year, there are 28.6 snowfall days, and 9.37" (238mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 28min.On the first day of the month, sunrise is at 6:03 am and sunset at 8:02 pm. On the last day of May, in Helfenstein, Pennsylvania, sunrise is at 5:36 am and sunset at 8:30 pm EDT.
Sunshine
In May, the average sunshine is 8.2h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. 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 Helfenstein in May?
What is the average humidity in May?
What is the wettest month?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Helfenstein have in May?
When are sunrise and sunset in May in Helfenstein?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Helfenstein, PA
- Average high temperature in May: 68.2°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in May: 49.3°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in May
Helfenstein, 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 (29.94"Hg).
Average wind speed in May
Helfenstein, PA
- Average wind speed in May: 6.4mph
The windiest months (with the highest average wind speed) are March and April (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Helfenstein, PA
- Average humidity in May: 81%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall in May
Helfenstein, PA
- Average rainfall in May: 1.97"
The wettest months (with the highest rainfall) are May and July (1.97").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in May
Helfenstein, PA
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in May
Helfenstein, PA
- Average snowfall in May: 0.12"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Helfenstein, PA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Helfenstein, PA
- Average daylight in May: 14h and 3min
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 18min).
- Average sunshine in May: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in May
Helfenstein, PA
- Average sunshine days in May: 12.5 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in May
Helfenstein, PA
- Average UV index in May: 5
The month with the highest UV index is June (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
Helfenstein, PA
- Average cloud cover in May: 49
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in May
Helfenstein, PA
- Average visibility in May: 5mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
Helfenstein, Pennsylvania, USA
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