S
M
T
W
T
F
S
26
99°
78°
27
100°
80°
28
88°
76°
29
83°
78°
30
82°
75°
31
85°
69°
1
83°
66°
2
86°
64°
3
88°
64°
4
88°
67°
5
81°
71°
6
83°
71°
7
88°
70°
8
91°
67°
9
96°
75°
10
95°
77°
11
97°
78°
12
100°
77°
13
98°
74°
14
96°
77°
15
99°
75°
16
90°
70°
17
83°
68°
18
87°
69°
19
93°
71°
20
99°
71°
21
98°
70°
22
94°
70°
23
90°
67°
24
89°
66°
25
82°
62°
26
91°
70°
27
89°
70°
28
87°
65°
29
89°
68°
30
90°
68°
31
90°
68°
1
91°
69°
2
91°
68°
3
90°
69°
4
90°
68°
5
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Topeka
Topeka's August 2026 forecast shows daily high temperatures ranging from 82° to 100°, with overnight lows between 62° and 77°. The average high for August is 91° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Topeka. See also: September | October | November.