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Spokane September Weather

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

Typical Spokane September Weather 1991–2020
Average daily high	73.7 °F
Average daily low	47.8 °F
Average monthly precipitation	0.6 inches
Average monthly snow	0.1 inches
Daily chance of precipitation	15.8%
Daily chance of snow	0.24%

Spokane September Weather Records 1889–2024
Highest temperature	98 °F	September 3, 1988
Lowest temperature	22 °F	September 23, 2000
Highest daily low	69 °F	September 2, 1938
Lowest daily high	38 °F	September 29, 2019
Hottest average high temperature	82.7 °F	1938
Coldest average high temperature	63.5 °F	1895
Most daily precipitation	1.5 inches	September 10, 1927
Most monthly precipitation	5.6 inches	1927
Most daily snow	1.9 inches	September 28, 2019
Most monthly snow	3.3 inches	2019

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	78.9	51.9	97	37
September 2	78.5	51.7	97	37
September 3	78.0	51.3	98	39
September 4	77.5	51.0	96	36
September 5	77.1	50.7	96	39
September 6	76.7	50.4	94	33
September 7	76.3	50.1	95	35
September 8	76.0	49.8	93	33
September 9	75.7	49.5	93	35
September 10	75.4	49.3	93	32
September 11	75.1	49.0	94	29
September 12	74.7	48.7	91	33
September 13	74.3	48.4	92	32
September 14	74.1	48.1	92	26
September 15	73.8	47.9	93	33
September 16	73.5	47.7	93	28
September 17	73.1	47.5	93	25
September 18	72.7	47.1	98	32
September 19	72.1	46.8	92	32
September 20	71.7	46.5	90	32
September 21	71.2	46.1	92	30
September 22	70.8	45.8	93	31
September 23	70.4	45.5	91	22
September 24	70.0	45.2	90	22
September 25	69.5	44.9	93	25
September 26	68.9	44.5	87	28
September 27	68.3	44.1	90	28
September 28	67.7	43.7	89	27
September 29	67.2	43.4	86	24
September 30	66.6	43.0	89	29

Weather Station Details

Years	Station	Coordinates
1889–2024	Spokane International Airport	location