Earliest and Latest Days of 90° F in Williston

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Williston, North Dakota history. It is based on NOAA data from the years 1894–2024.

Also see:

Earliest 90 degree day in Williston?

The earliest in the year that Williston, North Dakota had a high temperature of at least 90 °F is April 20 which has happened 3 times, most recently in 1980.

Latest 90 degree day in Williston?

The latest in the year that Williston, North Dakota had a high temperature of at least 90 °F is October 10 which has happened twice, most recently in 1955.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 20	1980	92 °F
April 20	1910	90 °F
April 20	1908	90 °F
April 21	1980	91 °F
April 22	1980	90 °F
April 26	1952	90 °F
April 26	1910	91 °F
April 26	1897	90 °F
April 28	2001	93 °F
April 28	1952	91 °F
April 29	2001	91 °F
April 29	1949	91 °F
April 30	1926	90 °F
April 30	1901	91 °F
May 3	1952	90 °F
May 4	1918	91 °F
May 4	1897	90 °F
May 5	2016	92 °F
May 6	2016	90 °F
May 7	1992	90 °F
May 7	1934	90 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 10	1955	90 °F
October 10	1910	90 °F
October 6	2021	92 °F
October 5	2021	90 °F
October 5	1963	90 °F
October 3	1997	91 °F
October 2	2005	90 °F
October 2	1997	91 °F
October 2	1992	92 °F
October 2	1957	90 °F
October 1	2005	91 °F
October 1	1992	92 °F
October 1	1963	91 °F
October 1	1953	91 °F
October 1	1897	93 °F
September 29	2021	91 °F
September 29	2001	90 °F
September 28	2021	91 °F
September 28	2001	91 °F
September 28	1897	92 °F