Earliest and Latest Days of 90° F in Grand Forks

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Grand Forks, North Dakota history. It is based on NOAA data from the years 1893–2024.

Also see:

Earliest 90 degree day in Grand Forks?

The earliest in the year that Grand Forks, North Dakota had a high temperature of at least 90 °F is April 21 which has happened twice, most recently in 1980.

Latest 90 degree day in Grand Forks?

The latest in the year that Grand Forks, North Dakota had a high temperature of at least 90 °F is October 3 which happened in 1922.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 21	1980	98 °F
April 21	1908	90 °F
April 23	1990	91 °F
April 26	1952	91 °F
April 27	1952	95 °F
April 28	1952	90 °F
April 29	1985	90 °F
April 29	1934	90 °F
April 30	1992	92 °F
May 2	1959	91 °F
May 3	1952	91 °F
May 4	1985	94 °F
May 4	1980	91 °F
May 4	1918	91 °F
May 5	2016	92 °F
May 5	1939	94 °F
May 5	1926	96 °F
May 5	1918	94 °F
May 8	1985	92 °F
May 8	1934	91 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 3	1922	95 °F
October 1	2023	91 °F
October 1	1992	93 °F
October 1	1922	94 °F
September 30	1976	90 °F
September 28	2021	91 °F
September 28	1922	90 °F
September 27	1952	96 °F
September 27	1922	90 °F
September 26	1974	91 °F
September 26	1922	90 °F
September 25	1938	94 °F
September 23	2007	91 °F
September 22	1936	96 °F
September 22	1929	90 °F
September 22	1922	96 °F
September 21	2015	91 °F
September 21	1922	91 °F
September 21	1908	92 °F
September 20	1914	91 °F