S
M
T
W
T
F
S
26
85°
66°
27
80°
63°
28
79°
60°
29
79°
62°
30
83°
66°
31
85°
66°
1
84°
65°
2
82°
65°
3
87°
61°
4
81°
58°
5
80°
60°
6
81°
58°
7
80°
57°
8
79°
58°
9
79°
56°
10
80°
59°
11
82°
64°
12
84°
64°
13
85°
57°
14
80°
56°
15
79°
59°
16
79°
62°
17
80°
56°
18
78°
57°
19
79°
56°
20
80°
56°
21
81°
60°
22
84°
62°
23
85°
63°
24
84°
63°
25
85°
62°
26
86°
60°
27
84°
61°
28
83°
62°
29
83°
60°
30
81°
54°
31
77°
51°
1
75°
53°
2
75°
53°
3
76°
54°
4
76°
52°
5
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grabill
Grabill's August 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 51° 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 Grabill. See also: September | October | November.
