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, Helfrichsville's average high-temperature sees a rise, moving from April's moderate 59°F (15°C) to an agreeable 69.8°F (21°C). An average low-temperature of 50.7°F (10.4°C) marks the nights throughout May.Humidity
The average relative humidity in May is 79%.Rainfall
In Helfrichsville, in May, during 17.3 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, there are 155.8 rainfall days, and 30.75" (781mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Helfrichsville. May is the last month it regularly snows in Helfrichsville. During 0.1 snowfall days, in May, Helfrichsville aggregates 0.12" (3mm) of snow. In Helfrichsville, during the entire year, snow falls for 29.4 days and aggregates up to 15.87" (403mm) of snow.Daylight
In Helfrichsville, the average length of the day in May is 14h and 28min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:59 pm. On the last day of May, in Helfrichsville, sunrise is at 5:34 am and sunset at 8:26 pm EDT.
Sunshine
The average sunshine in May is 8.2h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 5 in May leads to these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
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 Helfrichsville have in May?
How high is the UV index in May in Helfrichsville?
Average temperature in May
Helfrichsville, PA
- Average high temperature in May: 69.8°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in May: 50.7°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in May
Helfrichsville, 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
Helfrichsville, PA
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in May
Helfrichsville, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in May
Helfrichsville, PA
- Average rainfall in May: 2.91"
The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in May
Helfrichsville, PA
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in May
Helfrichsville, PA
- Average snowfall in May: 0.12"
The month with the highest snowfall is March (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Helfrichsville, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Helfrichsville, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in May
Helfrichsville, PA
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in May
Helfrichsville, PA
- Average UV index in May: 5
The months with the highest UV index are June and 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
Helfrichsville, PA
- Average cloud cover in May: 48
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in May
Helfrichsville, PA
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July and November (6mi).
The months with the lowest visibility are January, February, March, May, August, September, October and December (5mi).
Helfrichsville, Pennsylvania, USA
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