SEPTEMBER Daily Precipitation Records - WINNIPEG (since 1872)

Day	High rainfall		High snowfall		High Precip		Day
1	30.2	1926	0.0		30.2	1926	1
2	39.4	1957	0.0		39.4	1957	2
3	65.0	1941	0.0		65.0	1941	3
4	41.1	2015	0.0		41.1	2015	4
5	42.4	1910	0.0		42.4	1910	5
6	81.5	1886	0.0		81.5	1886	6
7	37.6	1919	0.0		37.6	1919	7
8	52.6	1977	0.0		52.6	1977	8
9	43.7	1945	0.0		43.7	1945	9
10	30.7	1950	0.0		30.7	1950	10
11	31.2	1880	T	1955*	31.2	1880	11
12	55.0	1978	0.0		55.0	1978	12
13	36.8	1934	0.0		36.8	1934	13
14	33.0	1912	0.0		33.0	1912	14
15	17.3	1933	T	1904	17.3	1933	15
16	29.1	2022	T	1916	29.1	2022	16
17	28.4	1874 A	0.0		28.4	1874 A	17
18	21.1	1946	T	1991	21.1	1946	18
19	30.5	1925	0.0		30.5	1925	19
20	51.1	1970	1.5	1945 D	51.1	1970	20
21	30.2	1931	0.8	1947	30.2	1931	21
22	44.2	1959	0.4	2018	44.2	1959	22
23	30.5	1926	1.0	1926	31.5	1926	23
24	37.6	1973	5.8	1984	37.6	1973	24
25	23.4	1915	18.3	1872	23.4	1915	25
26	36.1	1924	0.8	1934**	36.1	1924	26
27	22.6	1982	2.6	1951 D	22.6	1982	27
28	35.8	1954	0.8	1873	35.8	1954	28
29	12.9	2019	5.1	1908	12.9	2019	29
30	24.0	1983	1.5	1974	24.0	1983	30

Data Notes: 
Sep 17, 1874 - The 28.4 mm actually fell on the 16th and 17th combined. This is imported from ECCC Archives.
​Sep 20, 1945 - Winnipeg Tribune shows that the snow fell from 420am to breakfast time on the 20th, therefore did not fall on the 19th. Snowfall moved to the 20th.
Sep 27, 1951 - Evidenced by the Monthly Record, all the snow actually fell on the 27th. 
​Sep 9, 1955 - Trace snow on the 9th is very likely erroneous (potentially was hail). Monthly meteorological summary published by the federal government confirms snow on the 11th, but had nothing on the 9th. Eliminated the 9th as a result. 
Sep 18, 1991 - Only GS (small hail, snow pellets or graupel) was reported, therefore it's possible it was not actually true snow that fell. 

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