Earliest and Latest Days of 90° F in Summit

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Summit, South Dakota history. It is based on NOAA data from the years 1956–2024.

Also see:

Earliest 90 degree day in Summit?

The earliest in the year that Summit, South Dakota had a high temperature of at least 90 °F is April 20 which happened in 1980.

Latest 90 degree day in Summit?

The latest in the year that Summit, South Dakota had a high temperature of at least 90 °F is October 1 which happened in 2023.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 20	1980	90 °F
April 21	1980	94 °F
April 22	1980	90 °F
April 25	1962	91 °F
May 1	1959	95 °F
May 2	1959	92 °F
May 17	2012	90 °F
May 19	2009	92 °F
May 20	2009	92 °F
May 21	1964	91 °F
May 24	1994	92 °F
May 27	2018	93 °F
May 27	1969	90 °F
May 28	2018	93 °F
May 28	1969	90 °F
June 1	2020	92 °F
June 2	2020	92 °F
June 2	2017	90 °F
June 3	1968	94 °F
June 4	2021	92 °F
June 4	1968	92 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 1	2023	90 °F
September 27	1956	90 °F
September 26	1974	90 °F
September 19	2023	90 °F
September 19	1984	96 °F
September 19	1972	90 °F
September 18	1984	93 °F
September 18	1974	90 °F
September 17	1988	90 °F
September 15	2018	91 °F
September 14	1969	92 °F
September 13	1990	90 °F
September 11	1978	91 °F
September 10	1975	90 °F
September 9	1983	90 °F
September 9	1961	90 °F
September 9	1959	90 °F
September 9	1958	90 °F
September 8	1983	95 °F
September 8	1978	92 °F
September 8	1970	90 °F
September 8	1959	96 °F
September 8	1958	92 °F