Highest Daily Low Temperatures in Yellowknife History

This is a list of the hottest daily low temperatures ever recorded in Yellowknife, Northwest Territories history from 1942–2024 based on data from the NOAA.

Highest temperatures all-time

Record for the highest daily low temperature in Yellowknife

The highest low temperature for a calendar day in Yellowknife, Northwest Territories history was 21.8 °C which happened on Sunday, July 16, 1989.

Rank	Temperature	Date
1	21.8 °C	July 16, 1989
2	20.8 °C	July 15, 1989
3	20.2 °C	June 30, 2021
4	20.1 °C	August 4, 1984
5	20.0 °C	July 2, 2016
5	20.0 °C	July 12, 1975
5	20.0 °C	July 9, 1964
5	20.0 °C	June 27, 1955
9	19.9 °C	July 6, 1998
9	19.9 °C	August 14, 1989
11	19.8 °C	July 7, 1998
11	19.8 °C	August 9, 1991
13	19.7 °C	July 1, 1979
14	19.4 °C	July 27, 2000
15	19.3 °C	July 19, 2007
16	19.1 °C	August 3, 2020
16	19.1 °C	July 1, 2016
18	19.0 °C	July 12, 1998
18	19.0 °C	July 26, 1991
20	18.9 °C	July 30, 1996
20	18.9 °C	June 26, 1975
20	18.9 °C	July 30, 1973
20	18.9 °C	July 9, 1961