Highest August Temperatures in Waterloo
A list of the highest temperatures ever recorded in the month of
August in
Waterloo, Iowa from 1895–2024.
What's the hottest it has ever gotten in Waterloo in August?
The hottest August temperature in Waterloo, Iowa history was 110 °F which occurred on August 18, 1936.
| Rank |
Temperature |
Date |
| 1 |
110 °F |
August 18, 1936 |
| 2 |
105 °F |
August 23, 2023 |
| 2 |
105 °F |
August 17, 1988 |
| 2 |
105 °F |
August 16, 1937 |
| 2 |
105 °F |
August 3, 1930 |
| 6 |
104 °F |
August 15, 1988 |
| 6 |
104 °F |
August 5, 1918 |
| 8 |
103 °F |
August 24, 2023 |
| 8 |
103 °F |
August 16, 1988 |
| 10 |
102 °F |
August 15, 1936 |
| 10 |
102 °F |
August 12, 1936 |
| 10 |
102 °F |
August 9, 1936 |
| 10 |
102 °F |
August 1, 1917 |
| 14 |
101 °F |
August 14, 1988 |
| 14 |
101 °F |
August 2, 1988 |
| 14 |
101 °F |
August 1, 1988 |
| 14 |
101 °F |
August 12, 1918 |
| 14 |
101 °F |
August 21, 1916 |
| 14 |
101 °F |
August 5, 1916 |
| 20 |
100 °F |
August 3, 1988 |
| 20 |
100 °F |
August 19, 1983 |
| 20 |
100 °F |
August 16, 1983 |
| 20 |
100 °F |
August 24, 1936 |
| 20 |
100 °F |
August 8, 1934 |
| 20 |
100 °F |
August 22, 1916 |
| 20 |
100 °F |
August 20, 1916 |