Earliest and Latest Snowfalls in Watertown History

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

What's the Earliest it has Snowed in Watertown?

The earliest in the season it has snowed in Watertown, South Dakota is September 21 which happened in 1995.

What's the Latest it has Snowed in Watertown?

The latest in the season it has snowed in Watertown, South Dakota is May 14 which happened in 1907.

Earliest Snowfalls

Date	Year	Snowfall
September 21	1995	0.2 inches
September 25	1912	1.0 inches
September 26	1942	1.2 inches
October 7	1970	2.5 inches
October 8	1977	0.5 inches
October 8	1970	0.7 inches
October 9	2009	0.5 inches
October 9	1970	1.0 inches
October 9	1932	0.4 inches
October 10	2019	0.1 inches
October 10	1977	0.5 inches
October 11	2019	1.3 inches
October 11	2009	0.3 inches
October 11	2006	0.5 inches
October 12	2019	0.1 inches
October 12	2009	0.7 inches
October 12	1959	3.0 inches
October 14	2009	0.5 inches
October 15	1992	0.1 inches
October 16	2002	3.0 inches
October 16	1992	1.6 inches
October 16	1937	1.0 inches

Latest Snowfalls

Date	Year	Snowfall
May 14	1907	3.0 inches
May 12	1953	0.1 inches
May 10	1966	1.0 inches
May 9	1979	1.0 inches
May 7	1907	3.0 inches
May 5	1950	1.0 inches
May 3	1954	1.0 inches
May 2	1954	3.0 inches
May 2	1916	0.5 inches
May 1	2017	1.6 inches
April 30	1954	1.0 inches
April 30	1950	0.4 inches
April 29	1994	0.9 inches
April 29	1990	2.0 inches
April 29	1954	0.8 inches
April 29	1950	0.9 inches
April 29	1903	1.0 inches
April 28	1994	1.8 inches
April 28	1984	0.3 inches
April 28	1907	1.0 inches