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Weather in September in Louisville, Kentucky

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< September >
 
Normal Max/ High Temperature 27°C (80°F)
 
Average Temperature 21°C (69°F)
 
Min/ Low Temperature 15°C (59°F)
 
Normal Precipitation 80mm (3.2in)
Number of Wet Days (probability of rain on a day) 7 (23%)
Average Sunlight per day 08:27
Average Daylight per day 12:23
Sunny (Cloudy) Daylight Hours 69% (31%)
Sun altitude at solar noon on the 21st day.
52.3°


  • The average temperature in Louisville, Kentucky in September is warm at 20.8 °C (69.44 °F).
  • Afternoons can be hot with average high temperatures reaching 26.8 °C (80.2 °F).
  • Overnight temperatures are generally mild with an average low of 14.8 °C (58.6 °F).
  • The average diurnal temperature variation/ range in September is 12 °C (21.6 °F).
  • The weather in September is dryish with sporadic rain. Just 80.3mm (3.2in) of H2O precipitates across an average of 7 days.
  • In September the heavens above Louisville, Kentucky are moderately sunny having an average of a respectable 8:27 of splendid solar radiation per day.
  • The shortest day is 11:46 long and the longest day is 12:59 long with an average length of 12:23.
  • There are approximately 3:46 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 69.1% of daylight hours and cloudy 30.9% of daylight hours.

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Weather Trend Graph for September in Louisville, Kentucky, Usa

Graph of weather in Louisville, Kentucky in September

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