S
M
T
W
T
F
S
30
83°
62°
31
81°
59°
1
81°
61°
2
82°
62°
3
85°
65°
4
84°
57°
5
80°
56°
6
77°
56°
7
79°
61°
8
81°
56°
9
79°
56°
10
82°
57°
11
83°
54°
12
78°
54°
13
77°
53°
14
77°
54°
15
79°
55°
16
81°
55°
17
82°
56°
18
82°
59°
19
84°
61°
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 77° to 85°, with overnight lows between 53° and 65°. The average high for September is 81° with an average low of 58°. 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.