May weather forecastMount Vernon, OH
May
Weather in May
May, the last month of the spring in Mount Vernon, is an agreeable month, with an average temperature ranging between max 69.4°F (20.8°C) and min 51.4°F (10.8°C).Temperature
Mount Vernon experiences a temperature shift with the start of May, with average high-temperatures moving from a mild 58.6°F (14.8°C) in April to an agreeable 69.4°F (20.8°C). Throughout May, an average low-temperature of 51.4°F (10.8°C) is expected.Humidity
In Mount Vernon, the average relative humidity in May is 82%.Rainfall
May is the month with the most rainfall. Rain falls for 18.6 days and accumulates 2.36" (60mm) of precipitation.Snowfall
In Mount Vernon, snow does not fall in May through October.Daylight
In May, the average length of the day is 14h and 26min.On the first day of May, sunrise is at 6:28 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:53 pm EDT.
Sunshine
The average sunshine in May is 8.5h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. It's recommended to limit sun exposure when its radiation is at its peak during midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Mount Vernon, OH
- Average high temperature in May: 69.4°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in May
Mount Vernon, OH
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Mount Vernon, OH
- Average wind speed in May: 7.7mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in May
Mount Vernon, OH
- Average humidity in May: 82%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are March, April and November (78%).
Average rainfall in May
Mount Vernon, OH
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in May
Mount Vernon, OH
- Average rainfall days in May: 18.6 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in May
Mount Vernon, OH
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Mount Vernon, OH
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (10 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Mount Vernon, OH
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in May
Mount Vernon, OH
- Average sunshine days in May: 10.5 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in May
Mount Vernon, OH
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in May
Mount Vernon, OH
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Mount Vernon, OH
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
