Louisville, Kentucky weather in December

Averages from 2021–2025 (155 days of record).

Average high: 49°F
Average low: 34°F
Rainy days: ~12 per month
Total precipitation: 3.6 in
Warmest recorded: 71°F
Coldest recorded: -6°F

Expect December days in Louisville, Kentucky to top out around 49°F and cool to about 34°F overnight, with roughly 12 days of measurable rain across the month. In recent years December has ranged from -6°F to 71°F.

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Current Louisville, Kentucky forecast → · Historical data by Open-Meteo (ERA5).