Lowest December Temperatures in Ottumwa

A list of the lowest temperatures ever recorded in the month of December in Ottumwa, Iowa from 1894–2024.
What's the coldest it has ever gotten in Ottumwa in December?
The coldest December temperature in Ottumwa, Iowa history was -32 °F which occurred on December 28, 1924.
Rank Temperature Date
1 -32 °F December 28, 1924
2 -21 °F December 23, 1989
2 -21 °F December 30, 1917
2 -21 °F December 29, 1917
2 -21 °F December 26, 1914
6 -20 °F December 22, 1989
6 -20 °F December 22, 1916
8 -19 °F December 24, 2013
8 -19 °F December 21, 1989
8 -19 °F December 24, 1983
8 -19 °F December 16, 1932
12 -18 °F December 19, 1983
13 -17 °F December 23, 1983
13 -17 °F December 11, 1919
13 -17 °F December 21, 1916
16 -16 °F December 31, 2017
17 -15 °F December 25, 2000
17 -15 °F December 24, 2000
17 -15 °F December 18, 1985
17 -15 °F December 25, 1983
17 -15 °F December 22, 1983
17 -15 °F December 18, 1983
17 -15 °F December 21, 1963