S
M
T
W
T
F
S
26
67°
60°
27
65°
60°
28
69°
57°
29
66°
61°
30
66°
59°
31
67°
57°
1
66°
55°
2
67°
55°
3
66°
58°
4
65°
57°
5
66°
58°
6
65°
58°
7
68°
60°
8
67°
60°
9
65°
59°
10
69°
57°
11
71°
58°
12
70°
58°
13
67°
55°
14
65°
54°
15
66°
57°
16
69°
60°
17
67°
58°
18
66°
56°
19
65°
56°
20
67°
57°
21
69°
59°
22
69°
60°
23
Hist. Avg.
64°
54°
24
Hist. Avg.
64°
54°
25
Hist. Avg.
64°
54°
26
Hist. Avg.
64°
54°
27
Hist. Avg.
64°
54°
28
Hist. Avg.
64°
54°
29
Hist. Avg.
64°
54°
30
Hist. Avg.
64°
54°
31
Hist. Avg.
64°
54°
1
Hist. Avg.
63°
54°
2
Hist. Avg.
63°
53°
3
Hist. Avg.
63°
53°
4
Hist. Avg.
63°
53°
5
Hist. Avg.
63°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in St Austell
St Austell's August 2026 forecast shows daily high temperatures ranging from 65° to 71°, with overnight lows between 54° and 61°. The average high for August is 67° 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 St Austell. See also: September | October | November.
