Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Cleveland in September undergoes a slight reduction in the average high-temperature, shifting from August's warm 77.7°F (25.4°C) to an agreeable 71.8°F (22.1°C). In September, the nighttime temperature lowers to an average of 59.2°F (15.1°C).Humidity
The average relative humidity in September is 76%.Rainfall
In September, the rain falls for 13.5 days. Throughout September, 1.34" (34mm) of precipitation is accumulated. Throughout the year, in Cleveland, there are 150.7 rainfall days, and 17.44" (443mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Cleveland.Ocean temperature
In September, the average ocean temperature is 71.2°F (21.8°C).Note: For the majority, swimming in water with a temperature of 71.2°F (21.8°C) is not enjoyable. The difficulty in managing breathing rises as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in September in Cleveland, Ohio, is 12h and 28min.On the first day of the month, sunrise is at 6:53 am and sunset at 7:59 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:09 pm EDT.
Sunshine
In Cleveland, Ohio, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in Cleveland is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Beware! Reflections from sand and water can intensify the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Cleveland in September?
What is the average humidity in September in Cleveland?
How much does it rain in Cleveland in September?
When it does not snow in Cleveland?
What is the ocean temperature in September in Cleveland?
What is the average length of the day in September in Cleveland?
When is the sunrise / sunset in September in Cleveland?
How many hours of sunshine does Cleveland have in September?
How high is the UV index in September in Cleveland?
Average temperature in September
Cleveland, OH
- Average high temperature in September: 71.8°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in September: 59.2°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 (21.6°F).
Average pressure in September
Cleveland, OH
- Average pressure in September: 30.04"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 September
Cleveland, OH
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Cleveland, OH
- Average humidity in September: 76%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (74%).
Average rainfall in September
Cleveland, OH
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is October (1.81").
The driest months (with the least rainfall) are February and November (1.14").
Average rainfall days in September
Cleveland, OH
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is February (7.6 days).
Average snowfall in September
Cleveland, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Cleveland, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in September
Cleveland, OH
- Average sea temperature in September: 71.2°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 September /
Average sunshine in September
Cleveland, OH
- Average daylight in September: 12h 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 September: 8h and 2min
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 36min).
Average sunshine days in September
Cleveland, OH
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is July (14.6 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in September
Cleveland, OH
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Cleveland, OH
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Cleveland, OH
- Average visibility in September: 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).
Cleveland, Ohio, USA
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