Kentucky has a moderate, relatively humid climate, with abundant rainfall.

The southern and lowland regions are slightly warmer than the uplands. In Louisville, the normal monthly mean temperature ranges from 33°F (1°C) in January to 76°F (24°C) in July. The record high for the state was 114°F (46°C), registered in Greensburg on 28 July 1930; the record low, –37°F (–40°C), in Shelbyville on 19 January 1994.

Average daily relative humidity in Louisville ranges from 58% to 81%. The average annual precipitation at Louisville (1971–2000) was 44.5 in (113 cm); snowfall totals about 18 in (46 cm) a year.