nomadseason

April Weather in Louisville, United States

Last updated: June 24, 2025

In Louisville, United States, the average temperature in April hovers around 15°C (59°F), with a minimum dipping as low as -1°C (30°F) and a maximum soaring to 31°C (87°F). Expect a total precipitation of 133 mm (5.2 in) spread across 11 days, contributing to a rather high average humidity of 82%. Embrace the varying weather as you explore this vibrant locale!

April Temperature in Louisville

In April in Louisville, the average temperature is 15°C (59°F). The maximum can reach 31°C (87°F), and the minimum can be as low as -1°C (30°F). This varied climate offers travelers the chance to experience both warm and cool weather, making it ideal for a range of outdoor activities.

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

The chart illustrates April 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, April typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (87°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec414752596975797773634945
Data source: Temperature data for Louisville generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Louisville

In Louisville in April, the precipitation amount is 133 mm (5.2 in) spread over a period of 11 days.

April Precipitation Trends in Louisville

The chart displays monthly precipitation patterns in Louisville, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Louisville, April typically receives around 133 mm (5.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1011661611331131031041199112283135
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in Louisville

In Louisville in April, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

April Average Humidity in Louisville

This chart illustrates the average monthly humidity levels in Louisville, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Louisville is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Louisville

In Louisville in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Louisville.

Maximum UV Index Levels in Louisville for April

The chart shows the monthly maximum UV Index (UVI) for Louisville in April, 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 April, the maximum UV index in Louisville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109763
Data source: Louisville April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)101 mm (4.0 inches)86%moderate
February Weather8°C (47°F)166 mm (6.5 inches)86%high
March Weather11°C (53°F)161 mm (6.3 inches)86%very high
April Weather15°C (59°F)133 mm (5.2 inches)82%very high
May Weather20°C (69°F)113 mm (4.5 inches)85%extreme
June Weather24°C (75°F)102 mm (4.0 inches)85%extreme
July Weather26°C (79°F)104 mm (4.1 inches)83%extreme
August Weather25°C (77°F)119 mm (4.7 inches)76%very high
September Weather23°C (73°F)90 mm (3.6 inches)76%very high
October Weather17°C (63°F)122 mm (4.8 inches)80%high
November Weather9°C (49°F)83 mm (3.3 inches)88%high
December Weather7°C (45°F)135 mm (5.3 inches)88%moderate

Compare Louisville's Climate with Cities Worldwide