< Previous Month Next Month >

Sept-Îles September Weather

Averages and records for weather in Sept-Îles, Quebec in the month of September.

Typical Sept-Îles September Weather 1991–2020
Average daily high	14.9 °C
Average daily low	4.9 °C
Average monthly precipitation	10.1 cm
Daily chance of precipitation	45.9%

Sept-Îles September Weather Records 1944–2024
Highest temperature	29.4 °C	September 19, 1946
Lowest temperature	-6.5 °C	September 30, 1978
Highest daily low	16.7 °C	September 8, 1959
Lowest daily high	2.5 °C	September 25, 1997
Hottest average high temperature	18.3 °C	2023
Coldest average high temperature	11.8 °C	1974
Most daily precipitation	9.9 cm	September 4, 1972
Most monthly precipitation	22.5 cm	1972

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

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
September 1	17.4	7.4	26.4	0.6
September 2	17.3	7.3	26.5	1.1
September 3	17.1	7.1	25.0	-1.7
September 4	16.9	6.9	22.2	0.6
September 5	16.7	6.7	24.4	-1.7
September 6	16.5	6.5	26.7	-0.7
September 7	16.4	6.4	26.1	0.6
September 8	16.2	6.3	27.8	-1.1
September 9	16.1	6.1	25.6	-2.4
September 10	15.9	5.8	24.2	-2.5
September 11	15.6	5.6	20.7	-3.0
September 12	15.4	5.4	23.0	-3.9
September 13	15.3	5.2	26.1	-3.3
September 14	15.2	5.0	21.1	-2.8
September 15	15.0	4.9	25.3	-2.2
September 16	14.8	4.8	27.8	-2.0
September 17	14.6	4.6	23.0	-3.1
September 18	14.4	4.5	27.8	-3.6
September 19	14.2	4.3	29.4	-3.8
September 20	14.0	4.1	26.1	-2.8
September 21	13.8	4.0	24.4	-4.2
September 22	13.6	3.7	21.1	-4.4
September 23	13.4	3.5	22.6	-3.9
September 24	13.2	3.4	21.7	-5.0
September 25	13.0	3.2	21.7	-3.1
September 26	12.8	3.1	22.1	-4.1
September 27	12.6	2.9	19.4	-4.1
September 28	12.4	2.7	22.8	-4.4
September 29	12.2	2.5	19.4	-4.4
September 30	11.9	2.3	18.3	-6.5

Weather Station Details

Years	Station	Coordinates
2003–2024	Sept-Îles	location
1944–2002	Sept-Îles A	location