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St. Catharines March Weather

Averages and records for weather in St. Catharines, Ontario in the month of March.

Typical St. Catharines March Weather 1991–2020
Average daily high	4.7 °C
Average daily low	-1.8 °C
Average monthly precipitation	4.0 cm
Daily chance of precipitation	31.2%

St. Catharines March Weather Records 1882–2024
Highest temperature	26.7 °C	March 26, 1945
Lowest temperature	-19.4 °C	March 12, 1948
Highest daily low	13.5 °C	March 30, 1986
Lowest daily high	-12.8 °C	March 3, 1938
Hottest average high temperature	12.4 °C	1946
Coldest average high temperature	0.9 °C	1940
Most daily precipitation	5.9 cm	March 26, 2007
Most monthly precipitation	11.3 cm	1945

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
March 1	2.5	-3.9	16.1	-14.0
March 2	2.6	-3.7	19.0	-18.9
March 3	2.8	-3.6	20.0	-18.2
March 4	2.9	-3.5	13.6	-19.4
March 5	3.0	-3.3	18.7	-16.7
March 6	3.1	-3.2	19.4	-17.8
March 7	3.2	-3.1	16.1	-14.0
March 8	3.2	-3.1	21.1	-16.0
March 9	3.3	-3.0	18.2	-18.3
March 10	3.4	-2.9	19.2	-12.8
March 11	3.6	-2.7	18.4	-12.8
March 12	3.8	-2.6	17.2	-19.4
March 13	4.0	-2.4	20.0	-13.0
March 14	4.2	-2.2	24.5	-13.5
March 15	4.4	-2.0	23.0	-19.0
March 16	4.5	-1.8	21.1	-16.5
March 17	4.7	-1.7	20.0	-12.2
March 18	4.9	-1.5	21.1	-17.2
March 19	5.2	-1.2	18.3	-15.0
March 20	5.3	-1.0	23.9	-12.8
March 21	5.5	-0.9	24.4	-11.7
March 22	5.6	-0.7	25.0	-16.0
March 23	5.7	-0.6	23.5	-12.8
March 24	5.8	-0.5	20.0	-13.9
March 25	6.0	-0.3	23.9	-15.0
March 26	6.2	-0.1	26.7	-12.2
March 27	6.5	0.1	23.3	-12.0
March 28	6.6	0.3	26.1	-14.4
March 29	6.8	0.4	23.3	-14.4
March 30	7.0	0.6	23.5	-11.1
March 31	7.2	0.7	23.3	-13.3

Weather Station Details

Years	Station	Coordinates
1995–2024	Port Weller (AUT)	location
1882–1994	St Catherines	location