May weather forecastWesterville, OH
May
Weather in May
May in Westerville delivers the quintessential spring weather. Volatility in atmospheric pressure stabilises as weather patterns make way for more predictable and pleasant conditions. This month receives the highest rainfall yet, about 2.32" (59mm), supporting the full bloom of Westerville's lush landscapes. The gentle wind flow and increase in sunlight hours greatly enhances outdoor activity potential. By the end of the month, the city is fully transitioned into a warmer and sunnier season.Temperature
As Westerville, Ohio, enters May, the average high-temperature increases from the a moderate 60.4°F (15.8°C) of April to an agreeable 71.4°F (21.9°C). May nights in Westerville, Ohio, are marked by an average low-temperature of 54°F (12.2°C).Humidity
In May, the average relative humidity in Westerville, Ohio, is 77%.Rainfall
In May, the rain falls for 17.1 days. Throughout May, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 149 rainfall days, and 18.5" (470mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Westerville, the average length of the day in May is 14h and 25min.On the first day of the month, sunrise is at 6:30 am and sunset at 8:27 pm. On the last day of May, in Westerville, Ohio, sunrise is at 6:04 am and sunset at 8:54 pm EDT.
Sunshine
The average sunshine in May is 9.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Westerville. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 6 in May translates into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Westerville, OH
- Average high temperature in May: 71.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in May
Westerville, OH
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Westerville, OH
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in May
Westerville, OH
- Average humidity in May: 77%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Westerville, OH
- Average rainfall in May: 2.32"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in May
Westerville, OH
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in May
Westerville, OH
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.65").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Westerville, OH
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Westerville, 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 24min).
- Average sunshine in May: 9h and 6min
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 30min).
Average sunshine days in May
Westerville, OH
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in May
Westerville, OH
- Average UV index in May: 6
The months with the highest UV index are May, 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
Westerville, OH
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Westerville, OH
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
