Earliest and Latest Days of 90° F in Portage

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Portage, Wisconsin history. It is based on NOAA data from the years 1889–2024.

Also see:

Earliest 90 degree day in Portage?

The earliest in the year that Portage, Wisconsin had a high temperature of at least 90 °F is April 10 which happened in 1930.

Latest 90 degree day in Portage?

The latest in the year that Portage, Wisconsin had a high temperature of at least 90 °F is October 6 which happened in 1963.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 10	1930	91 °F
April 19	1985	99 °F
April 22	1980	91 °F
April 23	1980	92 °F
April 28	1952	94 °F
April 29	1952	90 °F
April 30	1952	90 °F
May 1	1952	95 °F
May 1	1901	91 °F
May 4	1952	93 °F
May 5	1909	91 °F
May 6	1934	94 °F
May 9	1934	95 °F
May 11	2022	90 °F
May 13	2022	94 °F
May 14	2022	92 °F
May 19	1934	93 °F
May 20	1934	93 °F
May 21	1972	90 °F
May 21	1934	91 °F
May 21	1921	90 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 6	1963	93 °F
September 29	1953	90 °F
September 29	1952	90 °F
September 28	1952	90 °F
September 26	2017	90 °F
September 25	1920	90 °F
September 24	2017	91 °F
September 23	2017	91 °F
September 23	1937	91 °F
September 22	1937	91 °F
September 21	1920	91 °F
September 20	1908	90 °F
September 19	1908	90 °F
September 18	1955	91 °F
September 17	1955	90 °F
September 17	1931	91 °F
September 16	1955	90 °F
September 16	1948	91 °F
September 16	1939	93 °F
September 16	1931	92 °F