S
M
T
W
T
F
S
26
80°
58°
27
78°
61°
28
75°
62°
29
68°
57°
30
72°
59°
31
79°
58°
1
78°
60°
2
77°
59°
3
80°
60°
4
80°
61°
5
80°
60°
6
79°
61°
7
80°
59°
8
78°
57°
9
78°
60°
10
79°
61°
11
78°
61°
12
78°
60°
13
77°
60°
14
76°
59°
15
73°
56°
16
75°
59°
17
76°
60°
18
75°
59°
19
75°
59°
20
74°
57°
21
75°
58°
22
75°
58°
23
76°
57°
24
78°
51°
25
69°
50°
26
70°
58°
27
72°
59°
28
76°
59°
29
77°
58°
30
73°
50°
31
68°
49°
1
67°
49°
2
67°
50°
3
68°
48°
4
67°
51°
5
72°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Guideboard
Guideboard's August 2026 forecast shows daily high temperatures ranging from 67° to 80°, with overnight lows between 48° and 62°. The average high for August is 75° with an average low of 57°. 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 Guideboard. See also: September | October | November.
