August weather forecastRocky River, OH
August
Weather in August
The last month of the summer, August, is another warm month in Rocky River, Ohio, with an average temperature ranging between max 77.4°F (25.2°C) and min 65.7°F (18.7°C).Temperature
Rocky River commences August with an average high-temperature of a still warm 77.4°F (25.2°C), maintaining a close resemblance to the previous month. August nights experience a consistent temperature drop to a refreshing 65.7°F (18.7°C).Humidity
With an average relative humidity of 74%, August is the least humid month.Rainfall
In August, the rain falls for 17.2 days. Throughout August, 3.11" (79mm) of precipitation is accumulated. Throughout the year, there are 172.7 rainfall days, and 33.27" (845mm) of precipitation is accumulated.Snowfall
In Rocky River, snow does not fall in May through October.Ocean temperature
With an average ocean temperature of 76.3°F (24.6°C), August is the month with the warmest seawater.Note: If cold is not your friend, swimming at 76.3°F (24.6°C) might be daunting. But the right mix of sunshine, wind, and external temperature can make a difference. Although wetsuits are not essential, they can enhance the swimming experience.
Daylight
In Rocky River, the average length of the day in August is 13h and 47min.On the first day of August, sunrise is at 6:22 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 8:01 pm EDT.
Sunshine
The average sunshine in August is 10.4h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 6 during August translates into these guidelines:
Fend off overexposure. Sun protection is vital. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Heed this! UV intensity is much stronger when reflected off sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Rocky River, OH
- Average high temperature in August: 77.4°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 August: 65.7°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 August
Rocky River, OH
- Average pressure in August: 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 August
Rocky River, OH
- Average wind speed in August: 7.5mph
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 August
Rocky River, OH
- Average humidity in August: 74%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (74%).
Average rainfall in August
Rocky River, OH
- Average rainfall in August: 3.11"
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 August
Rocky River, OH
- Average rainfall days in August: 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 August
Rocky River, OH
- Average snowfall in August: 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 August
Rocky River, OH
- Average snowfall days in August: 0 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 August
Rocky River, OH
- Average sea temperature in August: 76.3°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 August /
Average sunshine in August
Rocky River, OH
- Average daylight in August: 13h and 48min
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 August: 10h and 24min
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 August
Rocky River, OH
- Average sunshine days in August: 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 August
Rocky River, OH
- Average UV index in August: 6
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 August
Rocky River, OH
- Average cloud cover in August: 28
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 August
Rocky River, OH
- Average visibility in August: 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).
