You need to include Dec 1968 in the 1969 data. If we take a month to be 31 days... 124.7 cm from Dec 26-Jan 25...Typeing3 wrote: ↑Mon Nov 21, 2022 2:22 pm Data below from is from Agassiz. Monthly average temp and total snowfall in the brackets.
For 20th century, here are the top months (IMO):
1. January 1950 (-9.5c, 57.2cm)
2. January 1916 (-5.9c, 50.8cm)
3. January 1969 (-5.6c, 98.5cm)
4. January 1937 (-4.1c, 61.5cm)
5. January 1913 (-1.8c, 226.2cm)
6. January 1935 (-1.2c, 138.6cm)
7. January 1954 (-2.2c, 93.3cm)
8. January 1907 (-5.1c, 93.9cm)
9. January 1943 (-3.1c, 92.8cm)
10. December 1996 (-0.3c, 106.1cm)
11. February 1936 (-3.3c, 99.4cm)
12. January 1909 (-3.1c, 29.2cm)
13. December 1964 (-1.4c, 79.7cm)
14. January 1911 (-2.3c, 76.2cm)
15. December 1971 (-0.7c, 68.4cm)
16. December 1968 (-0.2c, 55.8cm)
17. January 1979 (-1.9c, 33.4cm)
18. December 1927 (-0.4c, 88.8cm)
19. January 1929 (-1.4c, 16.5cm)
20. January 1930 (-3.6c, 25.4cm)
21. November 1985 (-1.3c, 8.8cm)
22. February 1937 (0.2c, 115.4cm)
23. January 1949 (-1.3c, 10.6cm)
24. January 1971 (0.5c, 69.0cm)
25. February 1916 (2.2c, 73.6cm)
Temperature was -6.2C over that same period, good for 2nd. Slightly colder (-6.3) if starting on Dec 27th or 28th. Either way, 1968/69 was 2nd coldest 31 day period on record. Also 3rd snowiest month on record.