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St. Thomas October Weather

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

Typical St. Thomas October Weather 1991–2020
Average daily high	15.5 °C
Average daily low	5.5 °C
Average monthly precipitation	9.1 cm
Average monthly snow	0.2 cm
Daily chance of precipitation	41.5%
Daily chance of snow	0.32%

St. Thomas October Weather Records 1882–2024
Highest temperature	30.0 °C	October 6, 1946
Lowest temperature	-8.3 °C	October 23, 1969
Highest daily low	19.4 °C	October 30, 1946
Lowest daily high	1.7 °C	October 19, 1940
Hottest average high temperature	20.7 °C	1963
Coldest average high temperature	10.5 °C	1925
Most daily precipitation	7.2 cm	October 5, 1995
Most monthly precipitation	21.2 cm	1954
Most daily snow	12.7 cm	October 23, 1960
Most monthly snow	12.7 cm	1960

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

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
October 1	19.1	8.2	29.0	-2.8
October 2	18.8	8.0	28.3	-1.7
October 3	18.5	7.8	27.2	-0.6
October 4	18.3	7.7	27.8	-2.2
October 5	18.1	7.6	29.4	-4.4
October 6	17.8	7.4	30.0	-4.4
October 7	17.6	7.2	28.3	-5.0
October 8	17.4	7.0	26.1	-3.9
October 9	17.2	6.9	26.1	-4.4
October 10	16.9	6.8	27.8	-4.4
October 11	16.6	6.5	28.3	-3.0
October 12	16.4	6.3	27.8	-6.7
October 13	16.1	6.1	25.6	-4.0
October 14	15.9	5.9	25.6	-7.2
October 15	15.7	5.7	25.0	-3.9
October 16	15.4	5.5	26.1	-3.9
October 17	15.2	5.3	27.8	-3.5
October 18	14.9	5.2	25.6	-5.6
October 19	14.7	5.0	27.8	-6.7
October 20	14.4	4.8	25.0	-7.2
October 21	14.2	4.6	24.4	-6.7
October 22	14.0	4.4	25.0	-7.2
October 23	13.7	4.2	26.1	-8.3
October 24	13.4	4.0	22.8	-6.7
October 25	13.2	3.8	24.4	-5.6
October 26	13.0	3.7	25.0	-7.2
October 27	12.8	3.6	23.9	-7.2
October 28	12.5	3.4	23.0	-5.6
October 29	12.2	3.2	23.3	-7.8
October 30	11.9	3.0	23.3	-5.5
October 31	11.7	2.8	23.9	-7.0

Weather Station Details

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