S
M
T
W
T
F
S
30
87°
67°
31
88°
66°
1
84°
65°
2
85°
65°
3
84°
58°
4
82°
57°
5
79°
57°
6
80°
62°
7
83°
59°
8
85°
61°
9
80°
64°
10
84°
63°
11
84°
62°
12
85°
61°
13
83°
61°
14
84°
62°
15
86°
62°
16
76°
58°
17
76°
61°
18
Hist. Avg.
80°
57°
19
Hist. Avg.
80°
56°
20
Hist. Avg.
80°
56°
21
Hist. Avg.
79°
55°
22
Hist. Avg.
79°
55°
23
Hist. Avg.
78°
54°
24
Hist. Avg.
78°
54°
25
Hist. Avg.
78°
54°
26
Hist. Avg.
77°
53°
27
Hist. Avg.
77°
53°
28
Hist. Avg.
76°
52°
29
Hist. Avg.
76°
52°
30
Hist. Avg.
76°
52°
1
Hist. Avg.
75°
51°
2
Hist. Avg.
75°
51°
3
Hist. Avg.
74°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Topeka
Topeka's September 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 57° and 67°. The average high for September is 83° with an average low of 62°. 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 Topeka. See also: October | November | December.