Louisville, Kentucky weather in January

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

Average high

42°F

Average low

26°F

Rainy days

~11 per month

Total precipitation

4.7 in

Warmest recorded

65°F

Coldest recorded

1°F

Expect January days in Louisville, Kentucky to top out around 42°F and cool to about 26°F overnight, with roughly 11 days of measurable rain across the month. In recent years January has ranged from 1°F to 65°F.