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St. Catharines June Weather

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

Typical St. Catharines June Weather 1991–2020
Average daily high	22.9 °C
Average daily low	14.7 °C
Average monthly precipitation	8.1 cm
Daily chance of precipitation	35.0%

St. Catharines June Weather Records 1882–2024
Highest temperature	36.1 °C	June 28, 1933
Lowest temperature	1.0 °C	June 3, 1982
Highest daily low	24.4 °C	June 26, 1966
Lowest daily high	8.9 °C	June 3, 1945
Hottest average high temperature	29.4 °C	1949
Coldest average high temperature	20.3 °C	2009
Most daily precipitation	7.1 cm	June 25, 1968
Most monthly precipitation	22.6 cm	2000

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

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
June 1	20.2	11.7	31.7	1.1
June 2	20.5	11.9	33.3	3.3
June 3	20.7	12.2	32.2	1.0
June 4	20.9	12.4	34.4	2.8
June 5	21.1	12.7	35.0	4.4
June 6	21.2	12.9	35.6	3.3
June 7	21.4	13.0	33.3	3.9
June 8	21.5	13.2	32.8	3.3
June 9	21.7	13.4	35.6	2.0
June 10	21.9	13.6	32.8	3.3
June 11	22.1	13.8	32.8	2.2
June 12	22.3	14.0	35.0	3.0
June 13	22.4	14.2	34.5	5.0
June 14	22.6	14.4	34.0	5.0
June 15	22.7	14.6	34.0	5.0
June 16	22.9	14.8	33.9	5.0
June 17	23.1	14.9	33.5	5.0
June 18	23.3	15.1	36.0	3.9
June 19	23.6	15.3	34.0	5.0
June 20	23.8	15.6	34.0	3.0
June 21	24.0	15.8	33.9	5.6
June 22	24.1	16.0	33.0	6.7
June 23	24.3	16.1	31.7	5.6
June 24	24.4	16.3	35.0	5.6
June 25	24.5	16.5	35.0	7.8
June 26	24.6	16.6	33.3	5.0
June 27	24.7	16.7	34.4	7.0
June 28	24.9	16.9	36.1	7.0
June 29	25.0	17.0	33.3	5.0
June 30	25.1	17.1	34.4	7.0

Weather Station Details

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