Earliest and Latest Days of 90° F in Dillon

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

Also see:

Earliest 90 degree day in Dillon?

The earliest in the year that Dillon, Montana had a high temperature of at least 90 °F is May 19 which happened in 1954.

Latest 90 degree day in Dillon?

The latest in the year that Dillon, Montana had a high temperature of at least 90 °F is September 15 which happened in 2000.

Earliest Days ≥ 90 °F

Date	Year	Temperature
May 19	1954	90 °F
June 4	2012	90 °F
June 5	1969	92 °F
June 10	1956	90 °F
June 12	1959	91 °F
June 12	1940	90 °F
June 13	1959	90 °F
June 13	1918	90 °F
June 14	2021	95 °F
June 14	1974	90 °F
June 15	2021	92 °F
June 15	1933	91 °F
June 16	1986	90 °F
June 16	1961	90 °F
June 16	1940	91 °F
June 16	1933	94 °F
June 17	1986	92 °F
June 17	1961	92 °F
June 17	1940	92 °F
June 18	1974	91 °F
June 18	1961	92 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
September 15	2000	92 °F
September 14	1948	91 °F
September 13	1948	90 °F
September 12	1990	91 °F
September 12	1953	91 °F
September 12	1900	91 °F
September 11	1990	90 °F
September 9	2021	92 °F
September 8	1979	92 °F
September 7	2022	91 °F
September 7	1955	90 °F
September 6	2022	93 °F
September 6	1988	90 °F
September 6	1980	90 °F
September 6	1955	90 °F
September 5	2022	91 °F
September 5	2020	90 °F
September 5	1976	92 °F
September 5	1967	91 °F
September 5	1955	91 °F
September 5	1950	90 °F