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 sea temperature 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
May brings a rise in Rocky River's average high-temperature, moving from a fresh 51.6°F (10.9°C) in April to a comfortable 63.1°F (17.3°C). An average low-temperature of 50.7°F (10.4°C) is observed during May nights.Humidity
In May, the average relative humidity is 78%.Rainfall
In Rocky River, in May, during 17.2 rainfall days, 3.46" (88mm) of precipitation is typically accumulated. In Rocky River, during the entire year, the rain falls for 172.7 days and collects up to 33.27" (845mm) of precipitation.Snowfall
May through October are months without snowfall.Ocean temperature
In Rocky River, Ohio, the average seawater temperature in May is 50.5°F (10.3°C).Note: Danger awaits those who swim in 50.5°F (10.3°C) without protection. Falling below 50°F (10°C) means intense cold shock and hyperventilation.
Daylight
The average length of the day in May is 14h and 32min.On the first day of May, sunrise is at 6:23 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:54 pm EDT.
Sunshine
In Rocky River, the average sunshine in May is 9h.UV index
The average daily maximum UV index in May in Rocky River is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
What is the ocean temperature in May in Rocky River?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Rocky River, OH
- Average high temperature in May: 63.1°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in May: 50.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in May
Rocky River, 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
Rocky River, OH
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in May
Rocky River, OH
- Average humidity in May: 78%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (74%).
Average rainfall in May
Rocky River, OH
- Average rainfall in May: 3.46"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is February (2.17").
Average rainfall days in May
Rocky River, OH
- Average rainfall days in May: 17.2 days
The month with the highest number of rainy days is April (17.3 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Rocky River, OH
- Average snowfall in May: 0"
The month with the highest snowfall is February (4.84").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Rocky River, OH
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (16.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Rocky River, OH
- Average sea temperature in May: 50.5°F
The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (33.2°F).
Average daylight in May /
Average sunshine in May
Rocky River, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in May
Rocky River, OH
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is October (12 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in May
Rocky River, 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 February and December (UV index 1).
Average cloud cover in May
Rocky River, OH
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in May
Rocky River, OH
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Rocky River, Ohio, USA
Weather forecast for your location
2. Allow the app to use your location