Highest December Temperatures in Ottumwa

A list of the highest temperatures ever recorded in the month of December in Ottumwa, Iowa from 1894–2024.
What's the hottest it has ever gotten in Ottumwa in December?
The hottest December temperature in Ottumwa, Iowa history was 75 °F which occurred on December 15, 2021.
Rank Temperature Date
1 75 °F December 15, 2021
2 71 °F December 3, 2012
2 71 °F December 4, 1998
4 70 °F December 8, 1946
5 69 °F December 4, 2017
5 69 °F December 28, 1984
7 68 °F December 5, 2001
7 68 °F December 11, 1949
7 68 °F December 27, 1946
7 68 °F December 6, 1939
11 67 °F December 29, 1984
11 67 °F December 2, 1973
11 67 °F December 20, 1941
11 67 °F December 18, 1939
11 67 °F December 16, 1939
16 66 °F December 2, 1962
16 66 °F December 6, 1946
16 66 °F December 4, 1946
16 66 °F December 9, 1939
16 66 °F December 23, 1933
16 66 °F December 22, 1933
16 66 °F December 7, 1894