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Pendleton September Weather

Averages and records for weather in Pendleton, Oregon in the month of September.

Typical Pendleton September Weather 1991–2020
Average daily high	78.2 °F
Average daily low	49.5 °F
Average monthly precipitation	0.5 inches
Average monthly snow	none
Daily chance of precipitation	12.8%
Daily chance of snow	0%

Pendleton September Weather Records 1892–2024
Highest temperature	104 °F	September 2, 2022
Lowest temperature	21 °F	September 25, 1926
Highest daily low	70 °F	September 1, 1987
Lowest daily high	47 °F	September 29, 2019
Hottest average high temperature	86.3 °F	1899
Coldest average high temperature	68.0 °F	1985
Most daily precipitation	1.2 inches	September 5, 1899
Most monthly precipitation	2.7 inches	1927
Most daily snow	none	-
Most monthly snow	none	-

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	83.1	53.1	102	36
September 2	82.7	52.8	104	38
September 3	82.2	52.6	104	31
September 4	81.8	52.3	100	32
September 5	81.5	52.1	99	36
September 6	81.1	51.9	102	34
September 7	80.8	51.6	100	32
September 8	80.4	51.3	98	34
September 9	80.2	51.1	97	32
September 10	79.9	50.9	96	30
September 11	79.5	50.6	100	32
September 12	79.2	50.4	95	25
September 13	78.8	50.1	97	28
September 14	78.6	49.8	94	31
September 15	78.3	49.6	99	32
September 16	78.0	49.4	96	31
September 17	77.7	49.2	97	30
September 18	77.2	48.8	96	28
September 19	76.7	48.5	95	33
September 20	76.2	48.1	92	31
September 21	75.8	47.8	94	27
September 22	75.4	47.5	91	31
September 23	75.0	47.3	94	28
September 24	74.6	47.0	95	21
September 25	74.1	46.7	99	21
September 26	73.5	46.4	94	24
September 27	72.9	46.0	92	27
September 28	72.4	45.6	92	27
September 29	71.9	45.4	93	28
September 30	71.5	45.0	89	27

Weather Station Details

Years	Station	Coordinates
1928–2024	Pendleton	location
1892–1927	Pendleton Downtown	location