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
With the onset of May, Williston's average high-temperature experiences a rise, moving from April's moderate 55.6°F (13.1°C) to an enjoyable 67.6°F (19.8°C). An average low-temperature of 52°F (11.1°C) is anticipated throughout the nights during May.Humidity
In Williston, the average relative humidity in May is 77%.Rainfall
In Williston, in May, during 16.3 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 136.8 rainfall days, and 16.14" (410mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Williston, the average length of the day in May is 14h and 33min.On the first day of the month, sunrise is at 6:28 am and sunset at 8:31 pm. On the last day of May, sunrise is at 6:01 am and sunset at 9:00 pm EDT.
Sunshine
The average sunshine in May is 8.7h.UV index
In Williston, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In May, the maximum UV index of 5 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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 in Williston?
How much does it rain in May?
When it does not snow in Williston?
Does it snow in May?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Williston have in May?
What is the UV index intensity in May?
Average temperature in May
Williston, OH
- Average high temperature in May: 67.6°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 (30.7°F).
- Average low temperature in May: 52°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in May
Williston, OH
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Williston, OH
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in May
Williston, OH
- Average humidity in May: 77%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Williston, OH
- Average rainfall in May: 1.85"
The wettest months (with the highest rainfall) are June and July (1.97").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in May
Williston, OH
- Average rainfall days in May: 16.3 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in May
Williston, OH
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.97").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Williston, OH
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Williston, OH
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in May
Williston, OH
- Average sunshine days in May: 12.9 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in May
Williston, OH
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Williston, OH
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in May
Williston, OH
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Williston, Ohio, USA
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