Last updated: June 24, 2025
In Louisville, United States, the average temperature in January hovers around -3°C (26°F), with extremes ranging from a chilling -24°C (-12°F) to a surprisingly mild 15°C (59°F). Expect about 25 mm (1.0 in) of precipitation distributed over 5 days, all while experiencing an average humidity of 88%.
In January in Louisville, the average temperature is -3°C (26°F), with a maximum reaching 15°C (59°F) and a minimum dipping as low as -24°C (-12°F). It's essential to pack warm clothing and be prepared for significant temperature fluctuations while traveling.
In Louisville in January, the total precipitation amount is 25 mm (1.0 in) over a span of 5 days.
In Louisville in January humidity is 88%. With an average temperature of -3°C (26°F), this humidity feels like an icy dampness that clings to your skin, making every breath feel colder and more challenging, which can make traveling in these conditions quite uncomfortable.
In Louisville in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Louisville for better planning.
UV Risk Categories
Weather in Louisville varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Louisville, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
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 Weather | 2°C (35°F) | 62 mm (2.5 inches) | 81% | very high |
April Weather | 5°C (42°F) | 68 mm (2.7 inches) | 76% | extreme |
May Weather | 10°C (50°F) | 134 mm (5.3 inches) | 66% | extreme |
June Weather | 17°C (63°F) | 74 mm (2.9 inches) | 58% | extreme |
July Weather | 20°C (68°F) | 71 mm (2.8 inches) | 52% | extreme |
August Weather | 19°C (67°F) | 67 mm (2.7 inches) | 56% | extreme |
September Weather | 16°C (61°F) | 42 mm (1.6 inches) | 65% | very high |
October Weather | 7°C (45°F) | 48 mm (1.9 inches) | 76% | high |
November Weather | 2°C (36°F) | 30 mm (1.2 inches) | 82% | moderate |
December Weather | -2°C (29°F) | 19 mm (0.8 inches) | 89% | moderate |