Last updated: June 24, 2025
In April, the average temperature in Louisville, United States hovers around 19°C (67°F), with extremes ranging from a chilly -1°C (31°F) to a sweltering 35°C (96°F). Expect about 99 mm (3.9 in) of precipitation spread across 7 days, adding to an average humidity level of 81%. Embrace the diverse weather as it shapes your experience in this vibrant destination!
In April in Louisville, the average temperature is 19°C (67°F). Maximum temperatures can reach 35°C (96°F), while minimums can drop to as low as -1°C (31°F). It's advisable to pack layers and be prepared for both warm days and chilly nights during your travels.
In Louisville in April, the precipitation amount is 99 mm (3.9 in) over a period of 7 days.
In Louisville in April humidity is 81%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket enveloping you, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick, prompting you to seek shade and hydration frequently.
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.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 10°C (50°F) | 89 mm (3.5 inches) | 86% | moderate |
| February Weather | 13°C (55°F) | 116 mm (4.6 inches) | 84% | high |
| March Weather | 15°C (60°F) | 70 mm (2.8 inches) | 83% | very high |
| April Weather | 19°C (67°F) | 99 mm (3.9 inches) | 81% | very high |
| May Weather | 24°C (75°F) | 95 mm (3.7 inches) | 81% | extreme |
| June Weather | 27°C (80°F) | 119 mm (4.7 inches) | 81% | extreme |
| July Weather | 28°C (83°F) | 109 mm (4.3 inches) | 83% | extreme |
| August Weather | 28°C (82°F) | 108 mm (4.3 inches) | 81% | extreme |
| September Weather | 26°C (79°F) | 83 mm (3.3 inches) | 82% | very high |
| October Weather | 21°C (70°F) | 97 mm (3.8 inches) | 78% | very high |
| November Weather | 13°C (56°F) | 55 mm (2.2 inches) | 86% | high |
| December Weather | 11°C (52°F) | 112 mm (4.4 inches) | 89% | moderate |