S
M
T
W
T
F
S
26
75°
56°
27
79°
55°
28
78°
56°
29
80°
55°
30
76°
52°
31
72°
50°
1
73°
54°
2
77°
56°
3
79°
57°
4
81°
55°
5
78°
54°
6
76°
55°
7
79°
54°
8
80°
54°
9
78°
48°
10
72°
47°
11
71°
48°
12
72°
49°
13
70°
46°
14
71°
46°
15
75°
53°
16
75°
53°
17
74°
48°
18
72°
46°
19
75°
47°
20
78°
50°
21
78°
54°
22
77°
53°
23
76°
49°
24
77°
48°
25
76°
44°
26
69°
48°
27
70°
51°
28
70°
51°
29
72°
50°
30
73°
51°
31
75°
47°
1
73°
46°
2
71°
42°
3
68°
42°
4
72°
45°
5
73°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Highland Grove
Highland Grove's August 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 42° and 57°. The average high for August is 75° with an average low of 50°. 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 Highland Grove. See also: September | October | November.