Earliest and Latest Days of 80° F in Watertown

This is a list of the earliest and latest days in the year with a high temperature of at least 80 °F in Watertown, South Dakota history. It is based on NOAA data from the years 1893–2024.

Also see:

Earliest 80 degree day in Watertown?

The earliest in the year that Watertown, South Dakota had a high temperature of at least 80 °F is March 18 which has happened twice, most recently in 2012.

Latest 80 degree day in Watertown?

The latest in the year that Watertown, South Dakota had a high temperature of at least 80 °F is October 30 which happened in 1950.

Earliest Days ≥ 80 °F

Date	Year	Temperature
March 18	2012	82 °F
March 18	1921	82 °F
March 23	1939	81 °F
March 23	1928	80 °F
March 23	1910	82 °F
March 25	1939	81 °F
March 30	1943	81 °F
April 4	1930	82 °F
April 4	1929	80 °F
April 4	1921	80 °F
April 5	2021	82 °F
April 5	1991	83 °F
April 5	1912	81 °F
April 6	1991	86 °F
April 7	1988	82 °F
April 8	1931	85 °F
April 9	1977	85 °F
April 9	1930	83 °F
April 9	1912	81 °F
April 9	1910	82 °F

Latest Days ≥ 80 °F

Date	Year	Temperature
October 30	1950	85 °F
October 26	1927	85 °F
October 26	1922	83 °F
October 25	1927	84 °F
October 24	1989	80 °F
October 21	1947	83 °F
October 21	1927	83 °F
October 20	1953	80 °F
October 20	1947	84 °F
October 19	2003	85 °F
October 19	2000	83 °F
October 19	1958	81 °F
October 19	1953	81 °F
October 19	1914	82 °F
October 18	1953	80 °F
October 18	1936	80 °F
October 17	1924	80 °F
October 17	1910	85 °F
October 16	1991	85 °F
October 16	1961	81 °F
October 16	1956	80 °F
October 16	1945	80 °F
October 16	1918	82 °F
October 16	1910	88 °F