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August Weather in Louisville, United States

Last updated: June 24, 2025

In August, the average temperature in Louisville, United States hovers around 22°C (73°F). You can expect a minimum of 9°C (49°F) and a maximum of 33°C (92°F). With an average humidity of 76%, the month brings about 96 mm (3.8 in) of precipitation over 13 days. Prepare accordingly for some delightful yet occasional wet weather!

August Temperature in Louisville

In August in Louisville, the average temperature is 22°C (73°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 9°C (49°F). This makes it a perfect time for travelers looking to enjoy mild weather while exploring the area.

August Weather in Louisville: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Louisville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Louisville, August typically has an average temperature of 22°C (73°F), with highs reaching up to 33°C (92°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec303340506270757267574135
Data source: Temperature data for Louisville generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Louisville

In Louisville in August, the precipitation amount is 96 mm (3.8 in) spread over 13 days, indicating a relatively rainy period.

August Precipitation Trends in Louisville

The chart displays monthly precipitation patterns in Louisville, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Louisville, August typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec90104101134119128126961081109393
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Louisville

In Louisville in August, humidity is 76%. With an average temperature of 22°C (73°F), this humidity feels like a warm embrace that envelops you, making travel both refreshing and slightly steamy, as the air clings warmly to your skin.

August Average Humidity in Louisville

This chart illustrates the average monthly humidity levels in Louisville, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Louisville is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Louisville

In Louisville in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Louisville.

Maximum UV Index Levels in Louisville for August

The chart shows the monthly maximum UV Index (UVI) for Louisville in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Louisville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Louisville August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How August Weather in Louisville Compares to Other Months

Weather in Louisville varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Louisville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Louisville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)90 mm (3.5 inches)88%moderate
February Weather1°C (33°F)104 mm (4.1 inches)88%moderate
March Weather5°C (41°F)101 mm (4.0 inches)87%high
April Weather10°C (51°F)134 mm (5.3 inches)87%very high
May Weather17°C (62°F)119 mm (4.7 inches)81%very high
June Weather21°C (70°F)128 mm (5.0 inches)83%very high
July Weather24°C (75°F)126 mm (5.0 inches)82%very high
August Weather22°C (73°F)96 mm (3.8 inches)76%very high
September Weather20°C (68°F)108 mm (4.2 inches)77%very high
October Weather14°C (57°F)110 mm (4.3 inches)82%high
November Weather5°C (41°F)93 mm (3.7 inches)89%moderate
December Weather2°C (35°F)93 mm (3.7 inches)86%low

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