S
M
T
W
T
F
S
26
73°
57°
27
72°
59°
28
78°
52°
29
73°
53°
30
77°
53°
31
70°
52°
1
70°
53°
2
75°
49°
3
73°
50°
4
71°
49°
5
71°
47°
6
72°
50°
7
71°
53°
8
74°
57°
9
76°
56°
10
78°
49°
11
71°
50°
12
70°
50°
13
70°
49°
14
71°
54°
15
70°
51°
16
71°
49°
17
70°
52°
18
69°
48°
19
70°
50°
20
73°
51°
21
74°
55°
22
76°
55°
23
77°
54°
24
76°
53°
25
74°
55°
26
75°
55°
27
74°
52°
28
67°
47°
29
68°
48°
30
67°
47°
31
68°
51°
1
70°
50°
2
68°
49°
3
66°
45°
4
66°
51°
5
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grub
Grub's August 2026 forecast shows daily high temperatures ranging from 66° to 78°, with overnight lows between 45° and 59°. The average high for August is 72° with an average low of 51°. 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 Grub. See also: September | October | November.