S
M
T
W
T
F
S
26
80°
66°
27
85°
66°
28
85°
68°
29
81°
64°
30
85°
59°
31
86°
64°
1
79°
71°
2
84°
69°
3
84°
65°
4
87°
62°
5
90°
70°
6
90°
69°
7
87°
70°
8
89°
69°
9
89°
67°
10
85°
69°
11
77°
67°
12
75°
66°
13
85°
64°
14
79°
68°
15
85°
69°
16
85°
72°
17
82°
72°
18
83°
67°
19
82°
66°
20
81°
62°
21
83°
63°
22
79°
58°
23
77°
55°
24
77°
57°
25
78°
59°
26
80°
60°
27
77°
58°
28
79°
62°
29
80°
61°
30
80°
62°
31
81°
60°
1
80°
61°
2
82°
64°
3
78°
60°
4
78°
63°
5
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Westerville
Westerville's August 2026 forecast shows daily high temperatures ranging from 77° to 83°, with overnight lows between 55° and 66°. The average high for August is 79° with an average low of 61°. 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 Westerville. See also: September | October | November.
