The Hottest Summers in America of All Time

Source: Pictorial Parade / Getty Images

1974
> Avg temp in August: 59.8°F – #75 highest on 1940-2023 record
> Size of anomaly: -1.2°F from 1991-2020 normal – #29 coldest difference

Source: Archive Photos / Getty Images

1975
> Avg temp in August: 59.6°F – #81 highest on 1940-2023 record
> Size of anomaly: -1.4°F from 1991-2020 normal – #31 coldest difference

Source: Keystone / Getty Images

1976
> Avg temp in August: 59.7°F – #78 highest on 1940-2023 record
> Size of anomaly: -1.3°F from 1991-2020 normal – #30 coldest difference

Source: Michael Ochs Archives / Getty Images

1977
> Avg temp in August: 60.2°F – #41 highest on 1940-2023 record
> Size of anomaly: -0.8°F from 1991-2020 normal – #22 coldest difference

Source: Space Frontiers / Getty Images

1978
> Avg temp in August: 59.9°F – #69 highest on 1940-2023 record
> Size of anomaly: -1.1°F from 1991-2020 normal – #28 coldest difference