S
M
T
W
T
F
S
26
67°
58°
27
72°
60°
28
70°
58°
29
72°
59°
30
70°
58°
31
71°
59°
1
70°
58°
2
70°
59°
3
72°
60°
4
71°
60°
5
72°
59°
6
71°
56°
7
74°
61°
8
70°
60°
9
69°
61°
10
69°
61°
11
73°
60°
12
74°
61°
13
75°
62°
14
74°
61°
15
74°
61°
16
73°
60°
17
70°
60°
18
67°
56°
19
69°
58°
20
70°
59°
21
69°
59°
22
66°
58°
23
66°
57°
24
73°
60°
25
73°
59°
26
72°
59°
27
71°
58°
28
71°
59°
29
69°
59°
30
70°
58°
31
72°
59°
1
72°
59°
2
71°
58°
3
71°
59°
4
72°
56°
5
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Steveston
Steveston's August 2026 forecast shows daily high temperatures ranging from 66° to 75°, with overnight lows between 50° and 62°. The average high for August is 71° 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 Steveston. See also: September | October | November.