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