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August Weather in Louisville, United States

Last updated: June 24, 2025

In August, the average temperature in Louisville, United States is a pleasant 25°C (77°F). However, temperatures can fluctuate, with minimums dipping to 13°C (55°F) and maximums soaring to 35°C (95°F). Expect some rain, as 97 mm (3.8 in) of precipitation typically falls over 9 days, while humidity lingers around a high 82%, adding a touch of tropical feel to the air.

August Temperature in Louisville

In August in Louisville, the average temperature is 25°C (77°F). Maximums can reach 35°C (95°F), while minimums can drop to as low as 13°C (55°F). This makes Louisville an ideal destination for travelers seeking warm weather with pleasant evenings.

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 25°C (77°F), with highs reaching up to 35°C (95°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec333647556877807673604439
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 total precipitation amount reaches 97 mm (3.8 in) over the course of 9 days.

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 97 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec88981351211461119897681169385
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 82%. With an average temperature of 25°C (77°F), this humidity feels like a warm, oppressive blanket enveloping you as you explore, making every step feel more laborious and prompting the need for frequent hydration breaks.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec357911111099643
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 Weather0°C (33°F)88 mm (3.4 inches)84%moderate
February Weather2°C (36°F)98 mm (3.9 inches)82%moderate
March Weather8°C (47°F)135 mm (5.3 inches)84%high
April Weather13°C (56°F)121 mm (4.8 inches)83%very high
May Weather20°C (68°F)146 mm (5.7 inches)80%extreme
June Weather25°C (77°F)111 mm (4.4 inches)83%extreme
July Weather26°C (80°F)98 mm (3.8 inches)82%very high
August Weather25°C (77°F)97 mm (3.8 inches)82%very high
September Weather23°C (73°F)68 mm (2.7 inches)79%very high
October Weather15°C (60°F)116 mm (4.6 inches)79%high
November Weather7°C (44°F)93 mm (3.7 inches)88%moderate
December Weather4°C (39°F)85 mm (3.3 inches)87%moderate

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