Earliest and Latest Days of 100° F in Williston

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Williston, North Dakota history. It is based on NOAA data from the years 1894–2024.

Also see:

Earliest 100 degree day in Williston?

The earliest in the year that Williston, North Dakota had a high temperature of at least 100 °F is May 22 which happened in 1980.

Latest 100 degree day in Williston?

The latest in the year that Williston, North Dakota had a high temperature of at least 100 °F is September 15 which happened in 1948.

Earliest Days ≥ 100 °F

Date	Year	Temperature
May 22	1980	102 °F
May 23	1980	101 °F
May 27	1900	101 °F
June 5	1988	103 °F
June 6	1988	104 °F
June 7	1988	105 °F
June 8	1988	104 °F
June 10	1988	105 °F
June 10	1918	102 °F
June 11	1988	105 °F
June 13	1979	101 °F
June 13	1897	101 °F
June 14	1979	100 °F
June 16	1931	108 °F
June 17	1995	100 °F
June 17	1988	102 °F
June 17	1933	100 °F
June 18	1988	102 °F
June 20	1988	105 °F
June 20	1910	102 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 15	1948	100 °F
September 7	1976	101 °F
September 7	1908	101 °F
September 6	1976	105 °F
September 5	1998	102 °F
September 4	1998	102 °F
September 4	1978	102 °F
September 3	2015	101 °F
September 3	1978	103 °F
September 3	1948	101 °F
September 3	1940	100 °F
September 2	2015	101 °F
September 2	1983	100 °F
September 1	2004	100 °F
September 1	1983	100 °F
August 31	1983	100 °F
August 31	1929	100 °F
August 29	2012	100 °F
August 28	1996	100 °F
August 28	1971	101 °F