S
M
T
W
T
F
S
30
88°
49°
31
82°
48°
1
78°
46°
2
77°
48°
3
80°
51°
4
88°
48°
5
86°
54°
6
82°
46°
7
76°
45°
8
75°
43°
9
75°
44°
10
74°
43°
11
75°
46°
12
79°
49°
13
83°
50°
14
85°
52°
15
86°
51°
16
78°
52°
17
84°
51°
18
75°
50°
19
79°
50°
20
83°
51°
21
84°
52°
22
83°
50°
23
75°
51°
24
72°
40°
25
71°
40°
26
69°
45°
27
68°
39°
28
70°
38°
29
68°
38°
30
68°
41°
1
69°
44°
2
77°
46°
3
78°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Toppenish-Wapato
Toppenish-Wapato's September 2026 forecast shows daily high temperatures ranging from 68° to 88°, with overnight lows between 38° and 54°. The average high for September is 78° with an average low of 47°. 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 Toppenish-Wapato. See also: October | November | December.
