Earliest and Latest Snowfalls in Casper History

This is a list of the earliest and latest times in the year when snow was recorded in Casper, Wyoming. It is based on NOAA data from the years 1900–2024.

What's the Earliest it has Snowed in Casper?

The earliest in the season it has snowed in Casper, Wyoming is September 6 which happened in 1929.

What's the Latest it has Snowed in Casper?

The latest in the season it has snowed in Casper, Wyoming is June 13 which happened in 1969.

Earliest Snowfalls

Date	Year	Snowfall
September 6	1929	5.0 inches
September 7	2020	2.3 inches
September 8	2020	5.2 inches
September 8	1962	0.2 inches
September 11	2014	1.0 inches
September 11	1974	3.0 inches
September 12	1974	0.9 inches
September 12	1949	1.0 inches
September 13	1993	0.4 inches
September 14	1982	3.6 inches
September 15	1965	0.7 inches
September 16	1971	0.5 inches
September 16	1965	2.1 inches
September 17	2003	2.5 inches
September 17	1971	0.1 inches
September 17	1965	4.4 inches
September 19	1983	0.3 inches
September 19	1965	1.1 inches
September 20	1995	6.9 inches
September 20	1971	1.4 inches

Latest Snowfalls

Date	Year	Snowfall
June 13	1969	3.0 inches
June 9	1995	2.1 inches
June 5	1966	3.0 inches
June 4	1998	2.0 inches
June 4	1937	1.5 inches
June 1	1951	1.5 inches
May 29	1929	2.0 inches
May 25	1975	1.0 inches
May 25	1950	2.1 inches
May 24	1950	0.5 inches
May 23	1995	1.6 inches
May 22	2019	1.4 inches
May 22	1995	2.0 inches
May 22	1952	2.5 inches
May 22	1930	0.8 inches
May 21	2019	2.5 inches
May 21	1975	2.2 inches
May 20	2019	0.4 inches
May 20	2015	0.3 inches
May 20	2001	1.8 inches
May 20	1975	8.4 inches