Toasty: These are the 10 hottest temperatures ever recorded in Calgary

Calgary sure can be toasty during the summer months, and the hottest temperatures ever recorded in the city will make you sweat just looking at them.

Our friends at Environment and Climate Change Canada (ECCC) dug into the archives and rounded up the hottest temperatures Calgary has ever recorded, as of Aug. 25, 2025.

Although Calgary saw a decently wet summer, the season isn’t over just yet, and who knows, maybe a day from 2025 might land on this historic list.

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Laine Mitchell/Daily Hive

When you break down the hottest days by month, July is the big winner with six of the top 10 occurring in that month, followed by two in June and August. No love for May and September heat in YYC!

Here are the top 10 hottest temperatures ever recorded in Calgary:

1. 36.7°C – Aug. 10, 2018
2. 36.2°C – June 29, 2021
3. 36.1°C – July 1, 2021
4. 36.1°C – July 25, 1933
5. 36.1°C – July 15, 1919
6. 36°C – June 30, 2021
7. 35.6°C – July 22, 1936
8. 35.6°C – Aug. 3, 1914
9. 35.3°C – July 26, 1984
10. 35.1°C – July 24, 2023

So, there you have it.

That top 10 is sure making us swelter just looking at it, and whenever the heat decides to move into Calgary, be sure to check out our handy roundup of ways to stay cool and beat the heat in YYC.

It’s still summer, so be sure to wear lots of sunscreen in Alberta and stay hydrated while checking out some wild roadside attractions and some of the best lakes in the province, or enjoy some bucket list eats. The summer of 2025 is sure to come to a close soon.