The highest day temperature in September 2026 was 100°F. The lowest night temperature was 56°F. The average values for day and night temperatures during September were 76.0°F и 65.9°F respectivly.

The average sea surface temperature in September 2026 for Cleveland was 75.8°F. The maximum and minimum values were 71.0°F and 80.0°F respectively.

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation total in September for Cleveland is 0.7 in. It makes september one of the least rainy months of the year.

The average wind speed in September is 8.4 mph. It makes September one of the most windless months of the year for Cleveland.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Cleveland in September is 7.7 hours.