Earliest and Latest Snowfalls in Williamsport History

This is a list of the earliest and latest times in the year when snow was recorded in Williamsport, Pennsylvania. It is based on NOAA data from the years 1895–2024.

What's the Earliest it has Snowed in Williamsport?

The earliest in the season it has snowed in Williamsport, Pennsylvania is October 15 which happened in 2009.

What's the Latest it has Snowed in Williamsport?

The latest in the season it has snowed in Williamsport, Pennsylvania is May 9 which happened in 1977.

Earliest Snowfalls

Date	Year	Snowfall
October 15	2009	0.2 inches
October 16	1977	1.0 inches
October 18	1972	0.3 inches
October 20	1952	0.2 inches
October 20	1940	0.5 inches
October 26	1962	0.3 inches
October 29	2011	1.0 inches
October 29	2002	0.2 inches
October 30	2002	1.5 inches
October 31	1993	0.8 inches
October 31	1925	2.0 inches
November 1	1993	0.1 inches
November 2	1958	1.0 inches
November 2	1954	6.1 inches
November 3	1962	2.2 inches
November 3	1958	0.3 inches
November 3	1951	2.0 inches
November 4	1951	0.1 inches
November 5	1986	1.0 inches
November 5	1976	0.8 inches
November 5	1927	1.0 inches

Latest Snowfalls

Date	Year	Snowfall
May 9	1977	0.2 inches
April 29	1909	4.0 inches
April 28	1928	1.0 inches
April 27	1967	0.5 inches
April 24	1967	2.2 inches
April 23	1956	1.0 inches
April 22	1993	0.8 inches
April 20	1983	0.8 inches
April 19	2022	2.0 inches
April 19	1983	1.0 inches
April 19	1907	2.5 inches
April 18	2022	1.3 inches
April 18	1965	0.3 inches
April 18	1961	0.1 inches
April 18	1953	0.5 inches
April 17	2020	1.4 inches
April 17	1943	6.0 inches
April 17	1905	0.5 inches
April 16	1935	0.1 inches
April 15	1962	0.5 inches
April 15	1943	0.1 inches
April 15	1923	0.7 inches