Lowest December Temperatures in Livermore

A list of the lowest temperatures ever recorded in the month of December in Livermore, California from 1903–2024.
What's the coldest it has ever gotten in Livermore in December?
The coldest December temperature in Livermore, California history was 18 °F which has occurred twice, most recently on December 22, 1990.
Rank Temperature Date
1 18 °F December 22, 1990
1 18 °F December 9, 1972
3 19 °F December 23, 1990
3 19 °F December 14, 1972
5 20 °F December 24, 1990
5 20 °F December 31, 1978
5 20 °F December 30, 1978
5 20 °F December 12, 1972
5 20 °F December 11, 1972
5 20 °F December 10, 1972
5 20 °F December 21, 1968
5 20 °F December 24, 1963
5 20 °F December 11, 1932
14 21 °F December 8, 1978
14 21 °F December 5, 1972
14 21 °F December 25, 1963
14 21 °F December 15, 1932
14 21 °F December 12, 1932
14 21 °F December 31, 1915
20 22 °F December 15, 1975
20 22 °F December 8, 1972
20 22 °F December 26, 1968
20 22 °F December 17, 1965
20 22 °F December 12, 1963
20 22 °F December 27, 1962
20 22 °F December 24, 1948
20 22 °F December 23, 1948
20 22 °F December 24, 1930
20 22 °F December 26, 1924