S
M
T
W
T
F
S
26
74°
59°
27
65°
60°
28
65°
60°
29
67°
60°
30
68°
61°
31
68°
60°
1
67°
61°
2
65°
61°
3
66°
60°
4
67°
61°
5
69°
61°
6
69°
60°
7
68°
61°
8
69°
61°
9
67°
60°
10
68°
61°
11
69°
60°
12
69°
61°
13
68°
61°
14
70°
60°
15
70°
62°
16
69°
61°
17
70°
60°
18
67°
60°
19
68°
61°
20
69°
61°
21
68°
60°
22
69°
59°
23
69°
60°
24
64°
57°
25
64°
57°
26
65°
59°
27
64°
57°
28
65°
56°
29
64°
58°
30
64°
59°
31
66°
55°
1
65°
53°
2
63°
58°
3
63°
57°
4
67°
55°
5
64°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St Austell
St Austell's August 2026 forecast shows daily high temperatures ranging from 63° to 74°, with overnight lows between 53° and 62°. The average high for August is 67° with an average low of 59°. 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 St Austell. See also: September | October | November.
