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St. Thomas June Weather

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

Typical St. Thomas June Weather 1991–2020
Average daily high	24.9 °C
Average daily low	13.2 °C
Average monthly precipitation	8.0 cm
Average monthly snow	none
Daily chance of precipitation	34.1%
Daily chance of snow	0%

St. Thomas June Weather Records 1882–2024
Highest temperature	38.0 °C	June 25, 1988
Lowest temperature	-2.2 °C	June 11, 1972
Highest daily low	24.4 °C	June 29, 1959
Lowest daily high	8.9 °C	June 4, 1945
Hottest average high temperature	27.8 °C	1949
Coldest average high temperature	20.9 °C	1972
Most daily precipitation	10.5 cm	June 25, 1968
Most monthly precipitation	22.4 cm	1967
Most daily snow	none	-
Most monthly snow	none	-

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	22.8	10.8	32.0	-1.1
June 2	23.0	10.9	33.3	0.0
June 3	23.2	11.2	31.1	0.6
June 4	23.4	11.4	32.2	-1.1
June 5	23.6	11.6	32.2	1.7
June 6	23.8	11.8	31.1	0.0
June 7	23.9	12.0	31.5	2.8
June 8	24.1	12.2	31.1	-1.1
June 9	24.2	12.3	32.0	2.2
June 10	24.4	12.5	31.5	1.7
June 11	24.5	12.7	33.3	-2.2
June 12	24.7	12.8	32.8	4.4
June 13	24.8	13.0	34.0	3.3
June 14	24.9	13.2	33.0	2.8
June 15	25.0	13.2	32.0	0.6
June 16	25.1	13.4	33.5	2.8
June 17	25.2	13.5	35.0	1.0
June 18	25.4	13.6	34.0	2.2
June 19	25.6	13.8	33.3	5.0
June 20	25.8	14.0	35.0	0.6
June 21	25.9	14.1	35.6	2.8
June 22	26.1	14.3	33.3	1.0
June 23	26.2	14.4	31.5	2.8
June 24	26.2	14.5	33.0	2.8
June 25	26.2	14.6	38.0	5.5
June 26	26.3	14.6	35.6	6.0
June 27	26.4	14.7	34.0	4.4
June 28	26.4	14.7	35.0	5.6
June 29	26.5	14.7	34.4	5.0
June 30	26.6	14.8	33.5	7.2

Weather Station Details

Years	Station	Coordinates
1980–2024	St Thomas WPCP	location
1882–1980	St Thomas	location