Earliest and Latest Days of 70° F in West Yellowstone

This is a list of the earliest and latest days in the year with a high temperature of at least 70 °F in West Yellowstone, Montana history. It is based on NOAA data from the years 1924–2024.

Also see:

Earliest 70 degree day in West Yellowstone?

The earliest in the year that West Yellowstone, Montana had a high temperature of at least 70 °F is April 10 which happened in 2012.

Latest 70 degree day in West Yellowstone?

The latest in the year that West Yellowstone, Montana had a high temperature of at least 70 °F is October 22 which happened in 2003.

Earliest Days ≥ 70 °F

Date	Year	Temperature
April 10	2012	71 °F
April 12	1934	72 °F
April 17	1936	75 °F
April 18	1936	74 °F
April 19	1962	70 °F
April 19	1936	70 °F
April 20	1994	70 °F
April 20	1934	72 °F
April 21	2016	71 °F
April 21	2010	71 °F
April 21	1994	71 °F
April 21	1934	73 °F
April 22	2016	71 °F
April 22	2012	72 °F
April 22	2006	71 °F
April 22	1934	73 °F
April 23	2012	76 °F
April 23	1934	71 °F
April 24	2012	71 °F
April 24	1977	71 °F

Latest Days ≥ 70 °F

Date	Year	Temperature
October 22	2003	73 °F
October 21	2003	73 °F
October 20	1927	70 °F
October 19	2022	70 °F
October 19	1940	70 °F
October 19	1927	70 °F
October 18	2022	72 °F
October 18	1974	70 °F
October 17	2022	71 °F
October 17	2015	70 °F
October 17	1958	70 °F
October 17	1955	72 °F
October 16	2015	72 °F
October 16	1927	71 °F
October 15	1958	72 °F
October 14	1958	75 °F
October 14	1953	71 °F
October 13	1964	73 °F
October 13	1953	71 °F
October 12	1979	70 °F
October 12	1964	77 °F
October 12	1958	71 °F
October 12	1953	74 °F
October 12	1950	73 °F
October 12	1934	74 °F