S
M
T
W
T
F
S
26
94°
67°
27
94°
66°
28
93°
66°
29
94°
67°
30
94°
67°
31
93°
66°
1
93°
66°
2
94°
67°
3
94°
66°
4
92°
65°
5
93°
66°
6
92°
66°
7
94°
67°
8
94°
67°
9
93°
66°
10
94°
66°
11
94°
63°
12
88°
60°
13
88°
60°
14
89°
61°
15
92°
65°
16
93°
66°
17
92°
61°
18
90°
59°
19
89°
64°
20
90°
66°
21
94°
64°
22
92°
63°
23
92°
62°
24
92°
61°
25
91°
60°
26
90°
60°
27
90°
61°
28
91°
60°
29
90°
60°
30
90°
61°
31
91°
59°
1
90°
58°
2
89°
59°
3
88°
60°
4
88°
59°
5
89°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in San Dimas
San Dimas's August 2026 forecast shows daily high temperatures ranging from 88° to 94°, with overnight lows between 58° and 67°. The average high for August is 92° with an average low of 63°. 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 San Dimas. See also: September | October | November.
