S
M
T
W
T
F
S
26
70°
63°
27
70°
61°
28
73°
63°
29
70°
59°
30
68°
57°
31
67°
52°
1
69°
51°
2
74°
56°
3
79°
62°
4
74°
58°
5
72°
57°
6
69°
57°
7
70°
57°
8
69°
58°
9
73°
58°
10
73°
60°
11
72°
59°
12
73°
58°
13
69°
60°
14
70°
61°
15
70°
61°
16
69°
60°
17
69°
61°
18
68°
61°
19
69°
60°
20
68°
60°
21
66°
59°
22
65°
60°
23
66°
60°
24
66°
59°
25
67°
60°
26
66°
60°
27
67°
59°
28
67°
59°
29
65°
58°
30
66°
59°
31
64°
58°
1
63°
58°
2
63°
57°
3
66°
58°
4
63°
57°
5
62°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Penhallow
Penhallow's August 2026 forecast shows daily high temperatures ranging from 62° to 79°, with overnight lows between 51° and 62°. The average high for August is 68° with an average low of 58°. 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 Penhallow. See also: September | October | November.