Waterloo Consecutive 90 Degree Days

This page shows the record for the most days in a row in Waterloo, Iowa where the high temperature was at least 90 °F, from 1895–2024.

Also see:

Longest Streak: 21 Days

Between Jun 28 – Jul 18, 1921, the daily high temperature in Waterloo was always at least 90 °F – a span of 21 days.

# Days	When
21	Jun 28 – Jul 18, 1921
19	Jul 9–27, 1901
18	Jul 1–18, 1936
18	Jul 14–31, 1931
17	Jun 17 – Jul 3, 1910
14	Aug 6–19, 1936
14	Jul 12–25, 1932
12	Jul 17–28, 1964
12	Aug 2–13, 1900
11	Jul 25 – Aug 4, 1955
11	Aug 24 – Sep 3, 1953
11	Jun 22 – Jul 2, 1934
11	Jun 21 – Jul 1, 1931
11	Jul 5–15, 1923
11	Jul 22 – Aug 1, 1916
10	Jul 1–10, 1989
10	Jul 26 – Aug 4, 1988
9	Jul 21–29, 2021
9	Jul 21–29, 1941
9	May 28 – Jun 5, 1934