Pederson said Yellowknife’s former extreme high temperature was 32.5C on July 16, 1989. At the time, it was the climax of three baking-hot July days each above 30C. On that July 1989 night, data shows the overnight low remained at almost 22C.
This time around, Yellowknife reached 32.6C in the mid-afternoon of August 2, 2021. The overnight low did at least drop to around 16C.
“We’ve been breaking all-time records all over the place,” Pederson said. Canada’s national all-time high was smashed this summer by Lytton, BC, which reached 49.6C on June 29.
Délı̨nę, Fort Providence, Nahanni Butte, and Wrigley all set new daily records on August 2 – meaning they each experienced their hottest August 2 on record, if not their hottest-ever days.
Délı̨nę went from 29.5C (August 2, 1998) to 30.4C; Fort Providence went from 33.2C (August 2, 2020) to 34.6C; Nahanni Butte went from 32.5C (August 2, 2017) to 35.1C; and Wrigley went from 32.0C (August 2, 1984) to 32.1C.