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 start of May brings a rise in the average high-temperature, moving from a comfortable 61.5°F (16.4°C) in April to an agreeable 72.1°F (22.3°C). In May, Lancaster reports a consistent average low-temperature of 53.4°F (11.9°C) during the nights.Humidity
In May, the average relative humidity is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 17.6 days and typically aggregates up to 2.32" (59mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 23min.On the first day of the month, sunrise is at 6:29 am and sunset at 8:24 pm. On the last day of May, sunrise is at 6:04 am and sunset at 8:51 pm EDT.
Sunshine
The average sunshine in May is 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 moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 5 in May leads to these recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
What is the average length of the day in May in Lancaster?
When is the sunrise / sunset in May?
How many hours of sunshine does Lancaster have in May?
What is the UV index reading in May?
Average temperature in May
Lancaster, OH
- Average high temperature in May: 72.1°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in May: 53.4°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in May
Lancaster, OH
- Average pressure in May: 29.99"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Lancaster, OH
- Average wind speed in May: 6.9mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in May
Lancaster, OH
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in May
Lancaster, OH
- Average rainfall in May: 2.32"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in May
Lancaster, OH
- Average rainfall days in May: 17.6 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in May
Lancaster, OH
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Lancaster, OH
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Lancaster, OH
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Lancaster, OH
- Average sunshine days in May: 11 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in May
Lancaster, OH
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Lancaster, OH
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Lancaster, OH
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, August, October, November and December (6mi).
The months with the lowest visibility are January, July and September (5mi).
Lancaster, Ohio, USA
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