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 Helen transitions into May, the average high-temperature is observed to slightly rise from an enjoyable 63.5°F (17.5°C) in April to an agreeable 72.1°F (22.3°C). Helen reports an average nighttime low-temperature of 58.1°F (14.5°C) in May.Humidity
The most humid month is May, with an average relative humidity of 79%.Rainfall
In Helen, Maryland, in May, during 17.1 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 158.1 rainfall days, and 33.07" (840mm) of precipitation is accumulated.Snowfall
In Helen, snow does not fall in April through October.Daylight
In May, the average length of the day is 14h and 16min.On the first day of the month, sunrise is at 6:08 am and sunset at 7:58 pm. On the last day of May, sunrise is at 5:44 am and sunset at 8:24 pm EDT.
Sunshine
The average sunshine in May is 9h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 6 in May transforms into the following instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Helen in May?
What is the most humid month?
What is the average humidity in May?
How many days does it rain in May in Helen?
When it does not snow?
How many hours of daylight does Helen have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Helen have in May?
When is the highest UV index?
What is the UV index reading in May?
Average temperature in May
Helen, MD
- Average high temperature in May: 72.1°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in May: 58.1°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in May
Helen, MD
- 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
Helen, MD
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is March (9.2mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in May
Helen, MD
- Average humidity in May: 79%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is January (72%).
Average rainfall in May
Helen, MD
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is July (4.41").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in May
Helen, MD
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is August (17.7 days).
The month with the least rainy days is November (8 days).
Average snowfall in May
Helen, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Helen, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Helen, MD
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in May
Helen, MD
- Average sunshine days in May: 11.9 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in May
Helen, MD
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in May
Helen, MD
- Average cloud cover in May: 42
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in May
Helen, MD
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Helen, Maryland, USA
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