May weather forecastLancaster, NY
May
Weather in May
May, the last month of the spring in Lancaster, is an enjoyable month, with an average temperature varying between 48°F (8.9°C) and 66°F (18.9°C).Temperature
May's arrival signals a temperature shift, moving from a fresh 52.7°F (11.5°C) in April to an enjoyable 66°F (18.9°C). In Lancaster, May nights cool down to an average of 48°F (8.9°C).Humidity
In Lancaster, the average relative humidity in May is 76%.Rainfall
In Lancaster, in May, during 14.6 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, in Lancaster, there are 139.2 rainfall days, and 14.84" (377mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Lancaster aggregates 0.12" (3mm) of snow. In Lancaster, New York, during the entire year, snow falls for 62.1 days and aggregates up to 12.68" (322mm) of snow.Daylight
The average length of the day in May in Lancaster, New York, is 14h and 40min.On the first day of May, sunrise is at 6:07 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:46 pm EDT.
Sunshine
In Lancaster, the average sunshine in May is 8.9h.UV index
In Lancaster, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 5 in May translates into these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Enhance your sun protection with tightly woven, yet airy clothing. Caution! The reflection of snow 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
Average temperature in May
Lancaster, NY
- Average high temperature in May: 66°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in May: 48°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in May
Lancaster, 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
Lancaster, NY
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in May
Lancaster, NY
- Average humidity in May: 76%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall in May
Lancaster, NY
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in May
Lancaster, NY
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in May
Lancaster, NY
- Average snowfall in May: 0.12"
The months with the highest snowfall are January and February (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Lancaster, NY
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Lancaster, 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 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in May
Lancaster, NY
- Average sunshine days in May: 13.7 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (10.2 days).
Average UV index in May
Lancaster, NY
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Lancaster, NY
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Lancaster, NY
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
