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John Day September Weather

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

Typical John Day September Weather 1991–2020
Average daily high	78.9 °F
Average daily low	40.7 °F
Average monthly precipitation	0.5 inches
Average monthly snow	none
Daily chance of precipitation	14.8%
Daily chance of snow	0%

John Day September Weather Records 1903–2024
Highest temperature	110 °F	September 4, 1904
Lowest temperature	21 °F	September 25, 1970
Highest daily low	63 °F	September 7, 1998
Lowest daily high	46 °F	September 29, 2019
Hottest average high temperature	87.8 °F	1953
Coldest average high temperature	67.4 °F	1985
Most daily precipitation	1.1 inches	September 15, 1959
Most monthly precipitation	3.3 inches	1959
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	83.9	44.3	99	33
September 2	83.6	44.1	102	33
September 3	83.2	43.9	104	33
September 4	82.7	43.6	110	31
September 5	82.4	43.3	101	32
September 6	82.0	43.1	102	33
September 7	81.6	42.8	101	28
September 8	81.2	42.5	99	31
September 9	80.9	42.3	96	30
September 10	80.6	42.0	102	32
September 11	80.3	41.8	105	31
September 12	79.9	41.5	98	27
September 13	79.5	41.2	98	24
September 14	79.2	41.0	97	24
September 15	79.0	40.8	99	22
September 16	78.8	40.6	96	29
September 17	78.5	40.5	98	21
September 18	78.1	40.2	101	24
September 19	77.7	39.8	97	26
September 20	77.1	39.6	93	27
September 21	76.5	39.3	92	26
September 22	76.0	39.0	96	26
September 23	75.6	38.8	98	24
September 24	75.2	38.5	98	25
September 25	74.9	38.3	95	21
September 26	74.4	38.1	95	28
September 27	73.8	37.8	97	26
September 28	73.2	37.6	96	25
September 29	72.6	37.3	98	23
September 30	72.1	37.0	94	25

Weather Station Details

Years	Station	Coordinates
1903–2024	John Day	location