Earliest and Latest Snowfalls in Janesville History

This is a list of the earliest and latest times in the year when snow was recorded in Janesville, Wisconsin. It is based on NOAA data from the years 1893–2024.

What's the Earliest it has Snowed in Janesville?

The earliest in the season it has snowed in Janesville, Wisconsin is October 18 which happened in 1972.

What's the Latest it has Snowed in Janesville?

The latest in the season it has snowed in Janesville, Wisconsin is May 11 which happened in 1966.

Earliest Snowfalls

Date	Year	Snowfall
October 18	1972	0.3 inches
October 19	1991	0.3 inches
October 19	1989	0.8 inches
October 20	1989	0.8 inches
October 26	1959	0.5 inches
October 27	1997	2.0 inches
October 27	1980	1.1 inches
October 29	2019	1.8 inches
October 31	2019	1.7 inches
November 1	2023	0.2 inches
November 1	2019	4.0 inches
November 1	1954	1.5 inches
November 2	1954	0.8 inches
November 3	1951	2.5 inches
November 5	1988	0.5 inches
November 6	1991	0.5 inches
November 6	1960	1.5 inches
November 6	1959	0.1 inches
November 6	1951	1.4 inches
November 7	2019	0.5 inches
November 7	1951	4.2 inches
November 7	1894	1.0 inches

Latest Snowfalls

Date	Year	Snowfall
May 11	1966	2.0 inches
May 9	1990	1.0 inches
May 5	1989	0.3 inches
April 28	2019	5.0 inches
April 19	2018	3.0 inches
April 18	2022	1.2 inches
April 17	2023	0.2 inches
April 17	1983	0.1 inches
April 17	1961	1.0 inches
April 16	2018	1.5 inches
April 16	1983	1.2 inches
April 16	1961	0.9 inches
April 16	1949	1.0 inches
April 16	1947	1.0 inches
April 15	2019	0.9 inches
April 15	2018	1.0 inches
April 15	1980	0.6 inches
April 13	1997	5.0 inches
April 13	1962	2.0 inches
April 12	2007	4.0 inches
April 12	1997	2.5 inches
April 12	1973	2.8 inches