Earliest and Latest Days of 20° C in Yellowknife

This is a list of the earliest and latest days in the year with a high temperature of at least 20 °C in Yellowknife, Northwest Territories history. It is based on NOAA data from the years 1942–2024.

Also see:

Earliest 20 degree day in Yellowknife?

The earliest in the year that Yellowknife, Northwest Territories had a high temperature of at least 20 °C is April 20 which happened in 2010.

Latest 20 degree day in Yellowknife?

The latest in the year that Yellowknife, Northwest Territories had a high temperature of at least 20 °C is September 27 which happened in 2022.

Earliest Days ≥ 20 °C

Date	Year	Temperature
April 20	2010	20.4 °C
April 21	2010	20.1 °C
April 28	1980	20.3 °C
May 2	1980	21.1 °C
May 3	2023	22.3 °C
May 4	2016	20.7 °C
May 6	1951	21.7 °C
May 11	2023	20.4 °C
May 11	2003	21.2 °C
May 11	1975	20.0 °C
May 11	1952	22.8 °C
May 12	2023	21.0 °C
May 12	1971	21.7 °C
May 13	2023	25.0 °C
May 13	1973	21.7 °C
May 13	1963	20.0 °C
May 14	2023	22.9 °C
May 15	2016	20.0 °C
May 15	2011	22.2 °C
May 15	1980	20.6 °C

Latest Days ≥ 20 °C

Date	Year	Temperature
September 27	2022	22.3 °C
September 26	2001	20.8 °C
September 25	1995	20.6 °C
September 22	2014	20.1 °C
September 20	1982	22.0 °C
September 19	1982	20.5 °C
September 18	1967	20.6 °C
September 17	1994	21.2 °C
September 16	1994	20.0 °C
September 16	1981	21.7 °C
September 16	1967	21.1 °C
September 16	1961	20.0 °C
September 15	1967	25.6 °C
September 14	2009	24.9 °C
September 14	1996	20.5 °C
September 14	1967	20.0 °C
September 14	1966	22.2 °C
September 13	2009	22.5 °C
September 13	1996	21.1 °C
September 13	1950	20.0 °C