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
The shift from April to May is marked by an increase in the average high-temperature, moving from a cool 54.3°F (12.4°C) to a comfortable 67.3°F (19.6°C). Old Chatham records an average nighttime low-temperature of 46.6°F (8.1°C) throughout May.Humidity
In May, the average relative humidity is 77%.Rainfall
In Old Chatham, in May, during 15.8 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, in Old Chatham, there are 135.1 rainfall days, and 20.39" (518mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Old Chatham. During 0.3 snowfall days, in May, Old Chatham aggregates 0.39" (10mm) of snow. In Old Chatham, during the entire year, snow falls for 36.9 days and aggregates up to 15.98" (406mm) of snow.Daylight
In May, the average length of the day is 14h and 37min.On the first day of the month, sunrise is at 5:48 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:19 am and sunset at 8:24 pm EDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
The months with the highest UV index in Old Chatham are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In May, a daily UV index of 5 turns into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Consider this! The reflection from snow can almost 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 May temperatures in Old Chatham?
What is the average humidity in May in Old Chatham?
How much does it rain in Old Chatham in May?
What is the last month it snows in Old Chatham?
How many hours of daylight does Old Chatham have in May?
When is the sunrise / sunset in May in Old Chatham?
How many hours of sunshine does Old Chatham have in May?
When is the highest UV index in Old Chatham?
What is the UV index reading in May in Old Chatham?
Average temperature in May
Old Chatham, NY
- Average high temperature in May: 67.3°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in May: 46.6°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in May
Old Chatham, NY
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Old Chatham, NY
- Average wind speed in May: 6.5mph
The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Old Chatham, NY
- Average humidity in May: 77%
The months with the highest relative humidity are February and December (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in May
Old Chatham, NY
- Average rainfall in May: 2.05"
The wettest month (with the highest rainfall) is July (2.4").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in May
Old Chatham, NY
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in May
Old Chatham, NY
- Average snowfall in May: 0.39"
The month with the highest snowfall is March (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Old Chatham, NY
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Old Chatham, NY
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in May
Old Chatham, NY
- Average sunshine days in May: 13.1 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is June (12.5 days).
Average UV index in May
Old Chatham, 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 January, February, March, November and December (UV index 2).
Average cloud cover in May
Old Chatham, NY
- Average cloud cover in May: 46
The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in May
Old Chatham, NY
- Average visibility in May: 5mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
Old Chatham, New York, USA
Weather forecast for your location
2. Allow the app to use your location