May weather forecastDeWitt, NY
May
Weather in May
The last month of the spring, May, is a refreshing month in DeWitt, New York, with an average temperature varying between 46.8°F (8.2°C) and 66.2°F (19°C).Temperature
The arrival of May brings an increase in high-temperatures, moving from a fresh 52.9°F (11.6°C) in April to an enjoyable 66.2°F (19°C). During May, the average low-temperature is a chilly 46.8°F (8.2°C).Humidity
April and May, with an average relative humidity of 78%, are the least humid months.Rainfall
May is the month with the most rainfall. Rain falls for 15.3 days and accumulates 2.72" (69mm) of precipitation.Snowfall
In DeWitt, snow does not fall in May through September.Daylight
The average length of the day in May in DeWitt is 14h and 41min.On the first day of May, sunrise is at 5:56 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:36 pm EDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In May, a daily UV index of 5 turns into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. To guard against the harmful effects of the Sun, minimize exposure during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
DeWitt, NY
- Average high temperature in May: 66.2°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 (28°F).
- Average low temperature in May: 46.8°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in May
DeWitt, 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 (29.92"Hg).
Average wind speed in May
DeWitt, NY
- Average wind speed in May: 7.7mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).
Average humidity in May
DeWitt, NY
- Average humidity in May: 78%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (78%).
Average rainfall in May
DeWitt, NY
- Average rainfall in May: 2.72"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in May
DeWitt, NY
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (6 days).
Average snowfall in May
DeWitt, NY
- Average snowfall in May: 0"
The month with the highest snowfall is December (5.87").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
DeWitt, NY
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
DeWitt, NY
- Average daylight in May: 14h and 42min
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 30min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in May
DeWitt, NY
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in May
DeWitt, 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 and December (UV index 1).
Average cloud cover in May
DeWitt, NY
- Average cloud cover in May: 46
The months with the most cloud cover are January and February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in May
DeWitt, NY
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).





