Cleveland
Ohio, USA
Long term weather forecast
Long term weather forecast

September weather forecast and Climate
Cleveland, OH

  • Average high temperature in September: 73.9°F

Warmest month (with highest average high temperature) is July (82.6°F).
Month with lowest average high temperature is January (34.4°F).

  • Average low temperature in September: 56°F

Month with highest average low temperature is July (64.3°F).
Coldest month (with lowest average low temperature) is January (21.7°F).

  • Average humidity in September: 73.7%

Month with highest relative humidity is December (74.1%).
Month with lowest relative humidity is April (66.1%).

  • Average rainfall in September: 3.8"

Wettest month (with highest rainfall) is September (3.8").
Driest month (with lowest rainfall) is February (2.3").

  • Average rainfall days in September: 10 days

Month with highest number of rainy days is January (17.1 days).
Month with lowest number of rainy days is August (9.8 days).

  • Average snowfall in September: 0"

Month with highest snowfall is January (18.7").
Months with lowest snowfall are May, June, July, August and September (0").

  • Average snowfall days in September: 0 days

Month with highest number of snowfall days is January (13.5 days).
Months with lowest number of snowfall days are May, June, July, August and September (0 days).

  • Average sea temperature in September: 70°F

Best month for swimming (with highest average sea temperature) is August (73°F).
Coldest months (with lowest average sea temperature) are February and March (36°F).

  • Average daylight in September: 12h

Months with longest days are May, June and July (Average daylight: 15).
Month with shortest days is December (Average daylight: 9).

  • Average sunshine in September: 7.3h

Month with most sunshine is July (Average sunshine: 9.9).
Month with least sunshine is December (Average sunshine: 2.2).

  • Average UV index in September: 6

Months with highest UV index are June and July (UV index 9).
Month with lowest UV index is December (UV index 1).

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