Earliest and Latest Snowfalls in Portage History

This is a list of the earliest and latest times in the year when snow was recorded in Portage, Wisconsin. It is based on NOAA data from the years 1889–2024.

What's the Earliest it has Snowed in Portage?

The earliest in the season it has snowed in Portage, Wisconsin is October 11 which has happened twice, most recently in 1990.

What's the Latest it has Snowed in Portage?

The latest in the season it has snowed in Portage, Wisconsin is May 10 which happened in 1902.

Earliest Snowfalls

Date	Year	Snowfall
October 11	1990	1.5 inches
October 11	1932	1.0 inches
October 12	1909	2.0 inches
October 17	1952	1.0 inches
October 20	1992	2.0 inches
October 20	1989	1.0 inches
October 20	1937	2.5 inches
October 21	1917	0.4 inches
October 21	1913	2.5 inches
October 23	1929	3.5 inches
October 23	1917	3.5 inches
October 25	1967	1.0 inches
October 25	1962	0.1 inches
October 25	1925	1.5 inches
October 25	1898	4.0 inches
October 26	2020	0.4 inches
October 26	1925	4.5 inches
October 27	1997	4.0 inches
October 27	1925	2.0 inches
October 28	1933	0.2 inches
October 28	1925	1.4 inches

Latest Snowfalls

Date	Year	Snowfall
May 10	1902	4.0 inches
May 9	1923	1.5 inches
May 4	1935	2.5 inches
May 2	1940	2.0 inches
April 30	1996	2.0 inches
April 30	1956	1.5 inches
April 30	1903	1.0 inches
April 29	1909	1.0 inches
April 28	1988	0.3 inches
April 28	1909	1.0 inches
April 23	1963	2.0 inches
April 23	1910	4.0 inches
April 23	1909	2.0 inches
April 21	1909	1.0 inches
April 20	2011	2.0 inches
April 20	1993	2.0 inches
April 20	1922	1.5 inches
April 20	1905	1.0 inches
April 20	1903	1.0 inches
April 19	2018	5.5 inches