< Previous Month Next Month >

Leavenworth September Weather

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

Typical Leavenworth September Weather 1991–2020
Average daily high	79.1 °F
Average daily low	43.4 °F
Average monthly precipitation	0.7 inches
Average monthly snow	none
Daily chance of precipitation	13.5%
Daily chance of snow	0%

Leavenworth September Weather Records 1914–2024
Highest temperature	104 °F	September 11, 1944
Lowest temperature	19 °F	September 24, 1926
Highest daily low	66 °F	September 12, 1953
Lowest daily high	45 °F	September 29, 2019
Hottest average high temperature	87.7 °F	1967
Coldest average high temperature	68.5 °F	1921
Most daily precipitation	1.3 inches	September 23, 1984
Most monthly precipitation	3.8 inches	2013
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	83.7	47.8	101	34
September 2	83.4	47.6	101	33
September 3	82.9	47.3	102	31
September 4	82.6	47.0	100	34
September 5	82.2	46.7	101	33
September 6	81.9	46.5	99	32
September 7	81.5	46.1	101	30
September 8	81.2	45.8	102	32
September 9	81.0	45.6	99	32
September 10	80.7	45.3	98	34
September 11	80.4	45.0	104	32
September 12	80.0	44.7	99	32
September 13	79.7	44.3	98	25
September 14	79.4	44.0	97	32
September 15	79.1	43.7	100	29
September 16	78.8	43.4	99	30
September 17	78.5	43.2	99	28
September 18	78.1	42.9	98	29
September 19	77.8	42.6	95	29
September 20	77.3	42.3	94	27
September 21	76.8	41.9	96	29
September 22	76.5	41.6	93	28
September 23	76.1	41.3	94	25
September 24	75.6	41.1	96	19
September 25	75.1	40.8	92	27
September 26	74.5	40.5	92	29
September 27	73.9	40.2	92	26
September 28	73.3	39.9	95	27
September 29	72.7	39.6	92	24
September 30	72.3	39.3	92	24

Weather Station Details

Years	Station	Coordinates
1914–2024	Leavenworth 3 S	location