Earliest and Latest Days of 90° F in Williamsport

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Williamsport, Pennsylvania history. It is based on NOAA data from the years 1895–2024.

Also see:

Earliest 90 degree day in Williamsport?

The earliest in the year that Williamsport, Pennsylvania had a high temperature of at least 90 °F is April 14 which happened in 2023.

Latest 90 degree day in Williamsport?

The latest in the year that Williamsport, Pennsylvania had a high temperature of at least 90 °F is October 8 which happened in 2007.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 14	2023	90 °F
April 16	2002	90 °F
April 17	2002	91 °F
April 17	1976	91 °F
April 18	1976	92 °F
April 19	1976	91 °F
April 21	1941	90 °F
April 23	1960	91 °F
April 24	1960	91 °F
April 24	1925	96 °F
April 25	2009	90 °F
April 25	1960	90 °F
April 25	1925	93 °F
April 25	1921	91 °F
April 25	1915	90 °F
April 26	2009	91 °F
April 26	1990	92 °F
April 26	1962	90 °F
April 26	1921	91 °F
April 27	2009	94 °F
April 27	1990	92 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 8	2007	90 °F
October 5	1951	91 °F
October 5	1941	91 °F
October 3	1919	90 °F
October 2	1927	93 °F
October 1	1927	91 °F
September 30	1953	93 °F
September 28	1929	90 °F
September 27	2017	91 °F
September 26	2017	91 °F
September 26	2007	90 °F
September 26	1900	92 °F
September 25	2017	91 °F
September 24	2017	92 °F
September 24	1961	90 °F
September 23	2017	91 °F
September 23	1941	90 °F
September 23	1895	90 °F
September 22	1970	90 °F
September 22	1931	97 °F
September 22	1895	92 °F