S
M
T
W
T
F
S
30
82°
62°
31
87°
56°
1
78°
55°
2
81°
53°
3
77°
58°
4
78°
57°
5
82°
60°
6
85°
58°
7
76°
53°
8
73°
51°
9
74°
51°
10
74°
52°
11
75°
54°
12
76°
56°
13
72°
58°
14
76°
59°
15
73°
57°
16
75°
57°
17
74°
54°
18
72°
57°
19
71°
53°
20
75°
50°
21
76°
47°
22
72°
46°
23
69°
48°
24
72°
51°
25
77°
52°
26
70°
53°
27
69°
50°
28
69°
51°
29
Hist. Avg.
73°
48°
30
Hist. Avg.
73°
47°
1
Hist. Avg.
72°
47°
2
Hist. Avg.
72°
47°
3
Hist. Avg.
71°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wenatchee
Wenatchee's September 2026 forecast shows daily high temperatures ranging from 69° to 87°, with overnight lows between 46° and 62°. The average high for September is 75° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Wenatchee. See also: October | November | December.
