September weather forecast
Cleveland, OH

The Veterans Memorial Bridge on the Cuyahoga River, in Cleveland, Ohio
The Veterans Memorial Bridge on the Cuyahoga River, in Cleveland, Ohio

Weather in September

The first month of the autumn, September, is still a pleasant month in Cleveland, Ohio, with an average temperature varying between 59.2°F (15.1°C) and 71.8°F (22.1°C).

Temperature

In Cleveland, Ohio, the average high-temperature in September slightly decreases from a warm 77.7°F (25.4°C) in August to an agreeable 71.8°F (22.1°C). In Cleveland, the average low-temperature is 59.2°F (15.1°C).

Humidity

In September, the average relative humidity is 76%.

Rainfall

In September, the rain falls for 13.5 days. Throughout September, 1.34" (34mm) of precipitation is accumulated. In Cleveland, during the entire year, the rain falls for 150.7 days and collects up to 17.44" (443mm) of precipitation.

Snowfall

May through October are months without snowfall.

Ocean temperature

In September, the average ocean temperature in Cleveland is 71.2°F (21.8°C).
Note: For swimming, a surface water temperature of 71.2°F (21.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In Cleveland, the average length of the day in September is 12h and 28min.
On the first day of September, sunrise is at 6:52 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:11 pm EDT.

Sunshine

The average sunshine in September in Cleveland is 8.3h.

UV index

The average daily maximum UV index in September in Cleveland is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in September in Cleveland?

In Cleveland, Ohio, in September, the average high-temperature is 71.8°F (22.1°C), and the average low-temperature is 59.2°F (15.1°C).

What is the average humidity in September in Cleveland?

In September, the average relative humidity in Cleveland is 76%.

How much does it rain in Cleveland in September?

In Cleveland, Ohio, during September, the rain falls for 13.5 days and regularly aggregates up to 1.34" (34mm) of precipitation.

When it does not snow in Cleveland?

May through October are months without snowfall in Cleveland.

What is the ocean temperature in September in Cleveland?

In September, the average ocean temperature in Cleveland, Ohio, is 71.2°F (21.8°C). For most, swimming in 71.2°F (21.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the average length of the day in September in Cleveland?

The average day length in September in Cleveland, Ohio, is 12h and 28min.

What time are sunrise and sunset in September in Cleveland?

In September, on the first day of the month, sunrise is at 6:52 am and sunset at 8:00 pm. On the last day of the month, in Cleveland, sunrise is at 7:22 am and sunset at 7:11 pm EDT.

How many hours of sunshine does Cleveland have in September?

In September, the average sunshine duration in Cleveland, Ohio, is 8.3h.

How high is the UV index in September in Cleveland?

In Cleveland, Ohio, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cleveland, OH

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).

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Average pressure in September
Cleveland, OH

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).

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Average wind speed in September
Cleveland, OH

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).

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Average humidity in September
Cleveland, OH

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%).

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Average rainfall in September
Cleveland, OH

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").

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Average rainfall days in September
Cleveland, OH

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).

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Average snowfall in September
Cleveland, OH

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").

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Average snowfall days in September
Cleveland, OH

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).

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Average sea temperature in September
Cleveland, OH

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).

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Average daylight in September /
Average sunshine in September
Cleveland, OH

Average daylight in September / Average sunshine in September - Cleveland, OH
  • Average daylight in September: 12h and 28min

The month with the longest days is June (Average daylight: 15h and 8min).
The month with the shortest days is December (Average daylight: 9h and 14min).

  • Average sunshine in September: 8h and 18min

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).

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Average sunshine days in September
Cleveland, OH

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).

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Average UV index in September
Cleveland, OH

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).

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Average cloud cover in September
Cleveland, OH

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).

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Average visibility in September
Cleveland, OH

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).

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