Earliest and Latest Days of 100° F in Summit

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Summit, South Dakota history. It is based on NOAA data from the years 1956–2024.

Also see:

Earliest 100 degree day in Summit?

The earliest in the year that Summit, South Dakota had a high temperature of at least 100 °F is June 21 which happened in 1988.

Latest 100 degree day in Summit?

The latest in the year that Summit, South Dakota had a high temperature of at least 100 °F is August 18 which happened in 1976.

Earliest Days ≥ 100 °F

Date	Year	Temperature
June 21	1988	100 °F
June 24	1988	103 °F
June 25	1988	100 °F
June 28	1964	100 °F
July 4	1988	101 °F
July 4	1966	100 °F
July 7	1985	101 °F
July 9	1976	100 °F
July 10	1966	103 °F
July 19	1976	100 °F
July 25	1976	100 °F
July 26	2023	100 °F
July 28	2006	102 °F
July 30	2006	100 °F
July 31	2006	100 °F
July 31	1988	101 °F
July 31	1987	101 °F
August 13	1965	102 °F
August 18	1976	100 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
August 18	1976	100 °F
August 13	1965	102 °F
July 31	2006	100 °F
July 31	1988	101 °F
July 31	1987	101 °F
July 30	2006	100 °F
July 28	2006	102 °F
July 26	2023	100 °F
July 25	1976	100 °F
July 19	1976	100 °F
July 10	1966	103 °F
July 9	1976	100 °F
July 7	1985	101 °F
July 4	1988	101 °F
July 4	1966	100 °F
June 28	1964	100 °F
June 25	1988	100 °F
June 24	1988	103 °F
June 21	1988	100 °F