S
M
T
W
T
F
S
26
87°
60°
27
87°
61°
28
88°
62°
29
88°
61°
30
89°
62°
31
92°
64°
1
93°
66°
2
93°
66°
3
92°
65°
4
93°
64°
5
92°
63°
6
91°
63°
7
91°
64°
8
92°
64°
9
92°
66°
10
93°
64°
11
93°
61°
12
93°
60°
13
92°
61°
14
91°
66°
15
92°
67°
16
94°
66°
17
96°
66°
18
96°
65°
19
94°
66°
20
96°
66°
21
96°
65°
22
95°
66°
23
96°
65°
24
95°
65°
25
94°
66°
26
94°
65°
27
93°
65°
28
93°
63°
29
92°
62°
30
89°
64°
31
91°
62°
1
91°
61°
2
92°
60°
3
89°
58°
4
87°
59°
5
86°
59°
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 86° to 96°, 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.
