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Squamish September Weather

Averages and records for weather in Squamish, British Columbia in the month of September.

Typical Squamish September Weather 1991–2020
Average daily high	20.7 °C
Average daily low	9.3 °C
Average monthly precipitation	12.4 cm
Daily chance of precipitation	39.4%

Squamish September Weather Records 1959–2024
Highest temperature	38.2 °C	September 4, 2017
Lowest temperature	0.0 °C	September 29, 1961
Highest daily low	19.0 °C	September 5, 2017
Lowest daily high	7.2 °C	September 30, 2007
Hottest average high temperature	24.7 °C	2022
Coldest average high temperature	17.5 °C	1964
Most daily precipitation	9.9 cm	September 17, 2021
Most monthly precipitation	30.7 cm	1969

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	22.8	10.8	31.0	4.0
September 2	22.7	10.7	34.6	4.8
September 3	22.5	10.6	37.0	5.0
September 4	22.3	10.5	38.2	5.2
September 5	22.1	10.4	30.2	4.1
September 6	22.0	10.3	33.0	3.6
September 7	21.9	10.2	30.0	4.4
September 8	21.8	10.1	30.6	2.8
September 9	21.6	10.1	31.2	5.6
September 10	21.5	10.0	32.0	3.8
September 11	21.3	9.9	33.6	2.2
September 12	21.1	9.7	30.0	2.8
September 13	21.0	9.6	29.0	2.2
September 14	20.9	9.5	29.0	3.5
September 15	20.8	9.4	28.9	2.8
September 16	20.7	9.3	30.0	1.6
September 17	20.5	9.2	29.2	2.0
September 18	20.3	9.0	27.8	3.3
September 19	20.1	8.9	26.7	0.6
September 20	19.9	8.8	27.9	2.2
September 21	19.7	8.6	29.5	1.1
September 22	19.5	8.5	29.5	1.7
September 23	19.3	8.4	28.2	2.2
September 24	19.1	8.3	28.3	2.7
September 25	18.9	8.2	27.6	3.6
September 26	18.6	8.0	29.9	1.1
September 27	18.3	7.9	31.1	2.6
September 28	18.0	7.7	31.3	1.1
September 29	17.7	7.6	29.2	0.0
September 30	17.5	7.4	26.8	0.8

Weather Station Details

Years	Station	Coordinates
1986–2024	Squamish Auto	location
1959–1985	Squamish	location