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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 19°C (67°F), with fluctuations ranging from a cool 7°C (45°F) to a warm 33°C (91°F). Expect about 67 mm (2.7 in) of precipitation spread over 13 days, resulting in an average humidity of 56%. Perfect for experiencing the region's vibrant atmosphere!

August Temperature in Louisville

In August in Louisville, the average temperature is 19°C (67°F). Maximum temperatures can reach 33°C (91°F), while minimum temperatures can drop as low as 7°C (45°F). This makes Louisville an ideal destination for travelers seeking a pleasant climate with both warm and cool variations.

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 19°C (67°F), with highs reaching up to 33°C (91°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec262535425063686661443629
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 67 mm (2.7 in) over the course of 13 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 67 mm (2.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec2536636813474716842483020
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 56%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making it a comfortable environment for exploring, though you might occasionally seek shade to cool down.

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 56%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%76%67%58%52%56%65%76%82%89%
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 reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111112121110754
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-3°C (26°F)25 mm (1.0 inches)88%moderate
February Weather-4°C (26°F)36 mm (1.4 inches)87%high
March Weather2°C (35°F)62 mm (2.5 inches)81%very high
April Weather5°C (42°F)68 mm (2.7 inches)76%extreme
May Weather10°C (50°F)134 mm (5.3 inches)66%extreme
June Weather17°C (63°F)74 mm (2.9 inches)58%extreme
July Weather20°C (68°F)71 mm (2.8 inches)52%extreme
August Weather19°C (67°F)67 mm (2.7 inches)56%extreme
September Weather16°C (61°F)42 mm (1.6 inches)65%very high
October Weather7°C (45°F)48 mm (1.9 inches)76%high
November Weather2°C (36°F)30 mm (1.2 inches)82%moderate
December Weather-2°C (29°F)19 mm (0.8 inches)89%moderate

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