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 begins, there is an increase in the average high-temperature, moving from a cool 52.5°F (11.4°C) in April to a comfortable 66.4°F (19.1°C). May brings Marietta a consistent average low-temperature of 46.9°F (8.3°C).Humidity
April and May, with an average relative humidity of 79%, are the least humid months.Rainfall
May is the month with the most rainfall. Rain falls for 14.7 days and accumulates 1.5" (38mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.4 snowfall days, in May, Marietta aggregates 0.04" (1mm) of snow. Throughout the year, there are 76.2 snowfall days, and 16.93" (430mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 40min.On the first day of the month, sunrise is at 5:58 am and sunset at 8:06 pm. On the last day of May, sunrise is at 5:29 am and sunset at 8:36 pm EDT.
Sunshine
The average sunshine in May is 8.6h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In May, the maximum UV index of 5 translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What are the least humid months?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May?
What is the last month it snows in Marietta?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How long on average sun shines in May in Marietta?
What is the month with the highest UV index?
How high is the UV index in May?
Average temperature in May
Marietta, NY
- Average high temperature in May: 66.4°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 46.9°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in May
Marietta, NY
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Marietta, NY
- Average wind speed in May: 7.7mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in May
Marietta, NY
- Average humidity in May: 79%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in May
Marietta, NY
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in May
Marietta, NY
- Average rainfall days in May: 14.7 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in May
Marietta, NY
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Marietta, NY
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Marietta, NY
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in May
Marietta, NY
- Average sunshine days in May: 13.4 days
The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in May
Marietta, NY
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in May
Marietta, NY
- Average cloud cover in May: 44
The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in May
Marietta, NY
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, July and December (5mi).
Marietta, New York, USA
Weather forecast for your location
2. Allow the app to use your location