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Ottawa October Weather

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

Typical Ottawa October Weather 1991–2020
Average daily high	13.4 °C
Average daily low	4.5 °C
Average monthly precipitation	8.9 cm
Average monthly snow	2.0 cm
Daily chance of precipitation	46.6%
Daily chance of snow	1.4%

Ottawa October Weather Records 1889–2024
Highest temperature	31.0 °C	October 3, 2023
Lowest temperature	-12.8 °C	October 26, 1933
Highest daily low	18.5 °C	October 6, 2023
Lowest daily high	-2.2 °C	October 26, 1933
Hottest average high temperature	18.8 °C	1947
Coldest average high temperature	8.7 °C	1925
Most daily precipitation	7.0 cm	October 29, 2017
Most monthly precipitation	18.8 cm	1995
Most daily snow	21.6 cm	October 24, 1933
Most monthly snow	28.4 cm	1997

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	17.7	7.5	27.8	-3.3
October 2	17.4	7.3	27.2	-2.2
October 3	17.1	7.1	31.0	-2.2
October 4	16.8	6.9	30.0	-3.9
October 5	16.5	6.7	27.5	-2.2
October 6	16.2	6.5	26.2	-5.6
October 7	15.9	6.3	27.2	-6.7
October 8	15.7	6.1	26.5	-3.9
October 9	15.4	5.9	28.2	-4.4
October 10	15.1	5.7	27.5	-5.6
October 11	14.8	5.6	27.2	-5.6
October 12	14.5	5.3	28.3	-4.4
October 13	14.2	5.1	27.8	-4.4
October 14	13.9	4.9	26.7	-7.2
October 15	13.7	4.7	29.4	-5.0
October 16	13.4	4.5	26.7	-4.4
October 17	13.2	4.3	27.2	-5.6
October 18	12.9	4.1	26.7	-7.8
October 19	12.7	3.9	25.6	-8.9
October 20	12.4	3.7	23.3	-8.3
October 21	12.2	3.5	25.0	-7.8
October 22	11.9	3.3	26.5	-7.8
October 23	11.7	3.2	25.0	-5.9
October 24	11.4	3.0	25.0	-6.1
October 25	11.2	2.8	23.9	-7.8
October 26	10.9	2.6	24.5	-12.8
October 27	10.7	2.4	23.3	-8.9
October 28	10.3	2.2	23.4	-7.2
October 29	10.1	2.0	20.8	-7.8
October 30	9.8	1.7	20.8	-11.7
October 31	9.6	1.5	21.5	-10.6

Weather Station Details

Years	Station	Coordinates
1889–2024	Ottawa CDA	location