May weather forecastWilliamson, NY
May
Weather in May
The last month of the spring, May, is a refreshing month in Williamson, New York, with an average temperature ranging between max 60.6°F (15.9°C) and min 48.7°F (9.3°C).Temperature
May's arrival coincides with a temperature rise, moving from April's chilly 49.6°F (9.8°C) to a moderate 60.6°F (15.9°C). During May, Williamson experiences a consistent low-temperature average of 48.7°F (9.3°C).Humidity
In Williamson, the average relative humidity in May is 80%.Rainfall
In May, the rain falls for 16.7 days. Throughout May, 3.46" (88mm) of precipitation is accumulated. Throughout the year, there are 171.8 rainfall days, and 32.76" (832mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Williamson, New York. During 0.5 snowfall days, in May, Williamson aggregates 0.28" (7mm) of snow. In Williamson, during the entire year, snow falls for 67.1 days and aggregates up to 22.99" (584mm) of snow.Daylight
In Williamson, the average length of the day in May is 14h and 42min.On the first day of May in Williamson, sunrise is at 6:00 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:41 pm EDT.
Sunshine
In May, the average sunshine in Williamson is 9.4h.UV index
In Williamson, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 4 during May leads to these advisories:
Heed the precautions - It is counselled to guard against solar damage. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. 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
Williamson, NY
- Average high temperature in May: 60.6°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in May: 48.7°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in May
Williamson, NY
- Average pressure in May: 29.98"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
Williamson, NY
- Average wind speed in May: 8.8mph
The windiest month (with the highest average wind speed) is January (13.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in May
Williamson, NY
- Average humidity in May: 80%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (76%).
Average rainfall in May
Williamson, NY
- Average rainfall in May: 3.46"
The wettest month (with the highest rainfall) is October (3.62").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in May
Williamson, NY
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in May
Williamson, NY
- Average snowfall in May: 0.28"
The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Williamson, NY
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Williamson, 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 0min).
- Average sunshine in May: 9h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in May
Williamson, NY
- Average sunshine days in May: 12.7 days
The month with the most sunshine days is May (12.7 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in May
Williamson, NY
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Williamson, NY
- Average cloud cover in May: 38
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in May
Williamson, NY
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
