September weather forecast
Kentucky, USA

September in Kentucky ushers in the early signs of fall, providing a noticeable respite from the intense heat of the previous summer months. Daytime temperatures generally range from 70°F (21.1°C) to 85°F (29.4°C), while nighttime lows span from 55°F (12.8°C) to 65°F (18.3°C). The temperature difference between day and night becomes more pronounced, signaling the gradual approach of autumn.

Louisville and Lexington start to experience a reduction in humidity levels, making outdoor activities more comfortable. These cities also register a decrease in precipitation, as September is part of the transition toward the drier autumn months.

In comparison to August, September offers a significant decline in both temperature and humidity. The chance of thunderstorms diminishes as well, although some late-summer storms can still occur. The landscape starts to show early signs of the colorful foliage for which Kentucky is famous, particularly in the southeastern highlands and northern regions.

September acts as a prelude to the pleasant and more temperate conditions typical of October. While the month begins with some residual summer heat, the cooling trend becomes increasingly evident as days pass, particularly in the northern and eastern parts of the state.

September's weather is generally moderate, making it an attractive time for outdoor events and tourism. Although it marks the beginning of the end for summer, the month also promises the arrival of Kentucky’s scenic fall, with milder temperatures and less rainfall contributing to its appeal.

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• Louisville - September »
  The months with the least rainfall in Louisville, Kentucky, are January and September Rain falls for 12.4 days and accumulates 1.06" (27mm) of rain. January and September are months with the least rain in Louisville when the rain falls for 12.4 days and typically aggregates up to 1.06" (27mm) of rain.
• Lexington - September »
  The month with the least rainfall in Lexington is September, when the rain falls for 13.7 days and typically collects 2.32" (59mm) of precipitation. In Lexington during September, the rain falls for 13.7 days and regularly aggregates up to 2.32" (59mm) of precipitation.
• Bowling Green - September »
  The average relative humidity in September in Bowling Green is 75%. September in Bowling Green witnesses a gentle descent in average high-temperature, descending from August's 85.6°F (29.8°C) to a still warm 80.1°F (26.7°C).
• Owensboro - September »
  The month with the least rainfall in Owensboro is September, when the rain falls for 11.9 days and typically collects 1.46" (37mm) of precipitation. In Owensboro during September, the rain falls for 11.9 days and regularly aggregates up to 1.46" (37mm) of precipitation.
• Covington - September »
  On the first day of September in Covington, sunrise is at 7:07 am and sunset at 8:08 pm. The arrival of September in Covington corresponds with a minor reduction in the average high-temperature, down from August's 83.8°F (28.8°C) to a still warm 77.9°F (25.5°C).
• Richmond - September »
  
• Georgetown - September »
  In Georgetown, during September, the rain falls for 13.9 days and regularly aggregates up to 2.2" (56mm) of precipitation. On the first day of September in Georgetown, Kentucky, sunrise is at 7:08 am and sunset at 8:07 pm.
• Elizabethtown - September »
  The month with the least rainfall in Elizabethtown, Kentucky, is September, when the rain falls for 13.7 days and typically collects 2.01" (51mm) of precipitation. The month with the least rainfall in Elizabethtown is September, when the rain falls for 13.7 days and typically collects 2.01" (51mm) of precipitation.
• Nicholasville - September »
  The months with the least rainfall in Nicholasville are September and October Rain falls for 12.6 days and accumulates 2.05" (52mm) of rain. In Nicholasville in September, during 12.6 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.
• Henderson - September »
  The month with the least rainfall in Henderson is September, when the rain falls for 9.9 days and typically collects 0.67" (17mm) of precipitation. September's advent in Henderson presents an average high-temperature of a still warm 79.7°F (26.5°C), indicating a slight variation from the conditions of the previous month.
• Frankfort - September »
  The month with the least rainfall is September, when the rain falls for 12 days and typically collects 1.54" (39mm) of precipitation. On the first day of September in Frankfort, Kentucky, sunrise is at 7:09 am and sunset at 8:08 pm.