Lowest September Temperatures in St. Petersburg

A list of the lowest temperatures ever recorded in the month of September in St. Petersburg, Russia from 1881–2024.
What's the coldest it has ever gotten in St. Petersburg in September?
The coldest September temperature in St. Petersburg, Russia history was -3.1 °C which occurred on September 28, 1976.
Rank Temperature Date
1 -3.1 °C September 28, 1976
2 -2.8 °C September 30, 1976
3 -2.6 °C September 24, 1956
3 -2.6 °C September 30, 1939
5 -2.5 °C September 25, 1939
6 -2.4 °C September 21, 1942
7 -2.0 °C September 24, 1939
8 -1.9 °C September 28, 1966
8 -1.9 °C September 28, 1907
10 -1.8 °C September 27, 1906
10 -1.8 °C September 29, 1888
12 -1.6 °C September 20, 1993
12 -1.6 °C September 28, 1986
12 -1.6 °C September 30, 1928
15 -1.5 °C September 29, 1976
15 -1.5 °C September 17, 1968
15 -1.5 °C September 23, 1956
18 -1.4 °C September 27, 1986
19 -1.3 °C September 23, 1894
20 -1.1 °C September 26, 1966