S
M
T
W
T
F
S
30
81°
53°
31
76°
59°
1
79°
54°
2
77°
52°
3
77°
55°
4
84°
57°
5
78°
51°
6
76°
51°
7
77°
52°
8
76°
50°
9
74°
50°
10
74°
51°
11
73°
52°
12
74°
55°
13
79°
56°
14
80°
53°
15
82°
56°
16
82°
57°
17
81°
49°
18
74°
47°
19
71°
47°
20
73°
53°
21
78°
49°
22
74°
50°
23
74°
55°
24
73°
52°
25
68°
48°
26
68°
50°
27
67°
46°
28
65°
44°
29
64°
50°
30
64°
55°
1
65°
54°
2
69°
43°
3
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in South Wenatchee
South Wenatchee's September 2026 forecast shows daily high temperatures ranging from 64° to 84°, with overnight lows between 41° and 59°. The average high for September is 74° with an average low of 51°. 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 South Wenatchee. See also: October | November | December.
