S
M
T
W
T
F
S
26
64°
50°
27
65°
47°
28
62°
51°
29
67°
51°
30
67°
47°
31
63°
50°
1
62°
49°
2
62°
45°
3
63°
46°
4
66°
45°
5
67°
48°
6
66°
48°
7
65°
50°
8
67°
47°
9
63°
46°
10
63°
49°
11
64°
52°
12
63°
51°
13
64°
48°
14
63°
47°
15
65°
48°
16
66°
47°
17
66°
47°
18
64°
46°
19
66°
48°
20
66°
52°
21
64°
52°
22
64°
47°
23
65°
53°
24
66°
49°
25
66°
48°
26
65°
49°
27
67°
50°
28
66°
49°
29
65°
52°
30
67°
51°
31
68°
50°
1
70°
51°
2
71°
53°
3
67°
50°
4
66°
50°
5
71°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St Ives
St Ives's August 2026 forecast shows daily high temperatures ranging from 62° to 71°, with overnight lows between 45° and 53°. The average high for August is 65° with an average low of 49°. 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.