S
M
T
W
T
F
S
26
84°
66°
27
79°
59°
28
79°
62°
29
82°
64°
30
81°
60°
31
81°
65°
1
82°
59°
2
81°
57°
3
80°
58°
4
78°
56°
5
79°
57°
6
79°
58°
7
81°
58°
8
82°
59°
9
85°
62°
10
83°
63°
11
81°
64°
12
85°
64°
13
85°
65°
14
84°
63°
15
85°
57°
16
83°
57°
17
78°
58°
18
77°
60°
19
77°
56°
20
76°
55°
21
77°
58°
22
80°
58°
23
83°
62°
24
84°
63°
25
83°
56°
26
84°
54°
27
77°
54°
28
76°
55°
29
76°
61°
30
80°
62°
31
83°
62°
1
83°
54°
2
80°
54°
3
82°
59°
4
80°
60°
5
77°
59°
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 76° to 85°, with overnight lows between 54° and 66°. The average high for August is 81° with an average low of 59°. 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.