S
M
T
W
T
F
S
26
68°
62°
27
66°
62°
28
69°
63°
29
69°
63°
30
70°
62°
31
71°
64°
1
71°
63°
2
70°
63°
3
68°
62°
4
69°
63°
5
68°
63°
6
68°
62°
7
66°
62°
8
64°
61°
9
64°
61°
10
68°
60°
11
67°
59°
12
68°
57°
13
66°
58°
14
66°
58°
15
67°
59°
16
67°
61°
17
68°
61°
18
69°
60°
19
69°
60°
20
68°
57°
21
69°
61°
22
69°
61°
23
67°
62°
24
67°
57°
25
66°
59°
26
64°
60°
27
65°
61°
28
67°
61°
29
68°
60°
30
68°
60°
31
67°
59°
1
67°
59°
2
66°
58°
3
67°
56°
4
66°
54°
5
62°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St Erth
St Erth's August 2026 forecast shows daily high temperatures ranging from 62° to 71°, with overnight lows between 54° and 64°. The average high for August is 67° with an average low of 60°. 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 Erth. See also: September | October | November.
