S
M
T
W
T
F
S
26
70°
63°
27
70°
61°
28
73°
63°
29
70°
59°
30
68°
57°
31
68°
54°
1
70°
52°
2
73°
50°
3
75°
54°
4
72°
63°
5
N/A
6
68°
53°
7
69°
56°
8
73°
60°
9
72°
61°
10
73°
59°
11
76°
61°
12
75°
62°
13
72°
61°
14
72°
60°
15
71°
60°
16
70°
58°
17
69°
59°
18
64°
61°
19
64°
62°
20
65°
61°
21
64°
59°
22
64°
61°
23
66°
61°
24
67°
62°
25
68°
62°
26
67°
61°
27
67°
61°
28
68°
62°
29
67°
60°
30
68°
61°
31
67°
61°
1
64°
60°
2
64°
60°
3
65°
58°
4
64°
60°
5
64°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in St Ives
St Ives's August 2026 forecast shows daily high temperatures ranging from 64° to 76°, with overnight lows between 53° and 62°. The average high for August is 68° 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 Ives. See also: September | October | November.