Florence is typically considered to have a Mediterranean climate, although under the Köppen climate classification it may be borderline humid subtropical(Cfa). It has hot, humid summers with little rainfall and cool, damp winters. Surrounded by hills in a river valley, Florence can be hot and humid from June to August. As Florence lacks a prevailing wind, summer temperatures are higher than along the coast. Rainfall in summer is convectional, while relief rainfall dominates in the winter, with some snow. The highest officially recorded temperature was 42.6 °C (108.7°F)in 26 July 1983 and the lowest was −23.2 °C (−9.8 °F) on 12 January 1985.

• The warmest month is July, with an average temperature range 63–88 °F.
• The coldest month is January, with an average temperature range of 35–50 °F.