Earliest and Latest Days of 100° F in Grand Forks

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Grand Forks, North Dakota history. It is based on NOAA data from the years 1893–2024.

Also see:

Earliest 100 degree day in Grand Forks?

The earliest in the year that Grand Forks, North Dakota had a high temperature of at least 100 °F is May 21 which happened in 1964.

Latest 100 degree day in Grand Forks?

The latest in the year that Grand Forks, North Dakota had a high temperature of at least 100 °F is September 7 which happened in 1931.

Earliest Days ≥ 100 °F

Date	Year	Temperature
May 21	1964	100 °F
May 30	1939	100 °F
May 30	1934	105 °F
June 4	2021	103 °F
June 5	2021	100 °F
June 16	1933	100 °F
June 17	1933	100 °F
June 18	1933	105 °F
June 19	2022	100 °F
June 30	1921	100 °F
July 5	1988	105 °F
July 6	1988	100 °F
July 6	1936	104 °F
July 7	1936	105 °F
July 8	1936	105 °F
July 9	1936	101 °F
July 10	1936	108 °F
July 11	1936	108 °F
July 12	1939	102 °F
July 12	1936	109 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 7	1931	100 °F
September 5	1978	102 °F
September 2	1983	100 °F
August 23	1929	101 °F
August 18	1945	101 °F
August 14	1952	100 °F
August 13	1984	100 °F
August 8	1958	102 °F
August 8	1949	101 °F
August 7	1983	104 °F
August 7	1949	100 °F
August 7	1936	100 °F
August 4	1947	102 °F
August 4	1931	102 °F
August 3	1989	101 °F
August 2	1946	101 °F
August 1	1989	101 °F
July 30	1929	102 °F
July 28	1941	100 °F
July 28	1917	106 °F