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Stevens Pass September Weather

Averages and records for weather in Stevens Pass, Washington in the month of September.

Typical Stevens Pass September Weather 1991–2020
Average daily high	62.1 °F
Average daily low	42.8 °F
Average monthly precipitation	3.9 inches
Daily chance of precipitation	28.0%

Stevens Pass September Weather Records 1982–2024
Highest temperature	92 °F	September 3, 2003
Lowest temperature	27 °F	September 27, 1999
Highest daily low	61 °F	September 5, 2017
Lowest daily high	38 °F	September 29, 2019
Hottest average high temperature	69.8 °F	1998
Coldest average high temperature	56.4 °F	2019
Most daily precipitation	3.4 inches	September 29, 2005
Most monthly precipitation	11.8 inches	2013

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

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
September 1	65.9	44.9	86	32
September 2	65.5	44.7	86	35
September 3	65.2	44.5	92	35
September 4	64.8	44.3	85	33
September 5	64.4	44.2	82	32
September 6	64.0	44.0	83	30
September 7	63.9	43.9	81	30
September 8	63.6	43.7	81	31
September 9	63.4	43.6	82	35
September 10	63.2	43.5	83	35
September 11	62.9	43.3	85	33
September 12	62.6	43.1	84	32
September 13	62.5	42.9	81	32
September 14	62.4	42.8	83	30
September 15	62.2	42.7	82	30
September 16	62.0	42.6	81	31
September 17	61.6	42.4	80	32
September 18	61.2	42.2	80	35
September 19	60.8	41.9	77	34
September 20	60.5	41.7	80	31
September 21	60.1	41.4	82	29
September 22	59.7	41.2	78	30
September 23	59.4	41.0	80	28
September 24	58.9	40.8	81	34
September 25	58.5	40.6	77	34
September 26	57.9	40.3	82	28
September 27	57.4	40.0	79	27
September 28	56.8	39.7	80	28
September 29	56.3	39.4	79	32
September 30	55.9	39.1	76	31

Weather Station Details

Years	Station	Coordinates
1982–2024	Stevens Pass	location