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°
62°
2
86°
65°
3
87°
66°
4
90°
71°
5
86°
70°
6
89°
71°
7
93°
70°
8
92°
72°
9
95°
71°
10
95°
73°
11
99°
73°
12
97°
74°
13
95°
73°
14
94°
67°
15
87°
69°
16
91°
70°
17
93°
72°
18
93°
72°
19
92°
72°
20
92°
71°
21
91°
72°
22
92°
71°
23
92°
70°
24
91°
71°
25
92°
70°
26
89°
68°
27
90°
68°
28
91°
70°
29
91°
69°
30
90°
68°
31
90°
68°
1
89°
68°
2
90°
69°
3
90°
69°
4
89°
68°
5
89°
68°
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 83° to 99°, with overnight lows between 62° and 74°. The average high for August is 91° with an average low of 70°. 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.