Earliest and Latest Days at or Below 32° F in Janesville

This is a list of the earliest and latest days in a winter season where the low temperature fell to at least 32 °F in Janesville, Wisconsin history. It is based on NOAA data from the years 1893–2024.

Earliest freezing temperature in Janesville?

The earliest in a winter season that Janesville, Wisconsin has recorded a low temperature of 32 °F or below is September 11 which happened in 1917.

Latest freezing temperature in Janesville?

The latest in a winter season that Janesville, Wisconsin has recorded a low temperature of 32 °F or below is June 4 which happened in 1945.

Earliest Days ≤ 32 °F

Date	Year	Temperature
September 11	1917	32 °F
September 16	1916	27 °F
September 18	1916	31 °F
September 20	1956	29 °F
September 21	1991	32 °F
September 22	1976	32 °F
September 22	1974	32 °F
September 23	1995	28 °F
September 23	1989	30 °F
September 23	1974	27 °F
September 24	1995	29 °F
September 24	1989	31 °F
September 24	1976	30 °F
September 25	1894	32 °F
September 26	1989	32 °F
September 26	1947	30 °F
September 26	1893	31 °F
September 27	1991	29 °F
September 27	1989	32 °F
September 27	1947	30 °F
September 27	1893	30 °F

Latest Days ≤ 32 °F

Date	Year	Temperature
June 4	1945	32 °F
May 27	1992	30 °F
May 27	1895	31 °F
May 23	1963	32 °F
May 21	2002	30 °F
May 20	1895	29 °F
May 18	2002	30 °F
May 16	1997	30 °F
May 16	1895	30 °F
May 14	1895	28 °F
May 13	1996	32 °F
May 12	1981	32 °F
May 12	1895	32 °F
May 11	2021	32 °F
May 11	1949	32 °F
May 11	1945	31 °F
May 10	1990	30 °F
May 10	1983	31 °F
May 10	1977	32 °F
May 10	1974	32 °F
May 10	1966	26 °F
May 10	1947	29 °F