S
M
T
W
T
F
S
26
87°
66°
27
86°
67°
28
83°
69°
29
82°
61°
30
86°
60°
31
87°
63°
1
81°
66°
2
80°
63°
3
83°
61°
4
84°
58°
5
86°
55°
6
84°
69°
7
85°
68°
8
88°
64°
9
88°
57°
10
85°
66°
11
76°
63°
12
80°
67°
13
82°
66°
14
80°
66°
15
82°
69°
16
85°
65°
17
80°
59°
18
81°
60°
19
82°
63°
20
83°
59°
21
84°
64°
22
82°
63°
23
80°
59°
24
80°
57°
25
78°
58°
26
81°
62°
27
83°
63°
28
75°
54°
29
76°
56°
30
77°
58°
31
81°
61°
1
83°
62°
2
84°
62°
3
83°
61°
4
82°
60°
5
80°
60°
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 75° to 85°, with overnight lows between 54° and 69°. The average high for August is 81° 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 Grabill. See also: September | October | November.
