S
M
T
W
T
F
S
26
96°
65°
27
96°
65°
28
94°
64°
29
92°
66°
30
94°
65°
31
93°
66°
1
92°
66°
2
94°
67°
3
96°
66°
4
93°
66°
5
93°
65°
6
94°
66°
7
91°
66°
8
88°
65°
9
91°
65°
10
90°
60°
11
89°
61°
12
91°
65°
13
Hist. Avg.
92°
63°
14
Hist. Avg.
93°
63°
15
Hist. Avg.
93°
63°
16
Hist. Avg.
93°
63°
17
Hist. Avg.
93°
63°
18
Hist. Avg.
93°
63°
19
Hist. Avg.
93°
63°
20
Hist. Avg.
93°
63°
21
Hist. Avg.
93°
63°
22
Hist. Avg.
93°
63°
23
Hist. Avg.
93°
63°
24
Hist. Avg.
93°
63°
25
Hist. Avg.
92°
62°
26
Hist. Avg.
92°
62°
27
Hist. Avg.
92°
62°
28
Hist. Avg.
92°
62°
29
Hist. Avg.
92°
62°
30
Hist. Avg.
92°
62°
31
Hist. Avg.
92°
62°
1
Hist. Avg.
92°
62°
2
Hist. Avg.
92°
62°
3
Hist. Avg.
92°
62°
4
Hist. Avg.
92°
62°
5
Hist. Avg.
91°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in San Dimas
San Dimas's August 2026 forecast shows daily high temperatures ranging from 88° to 96°, with overnight lows between 60° and 67°. The average high for August is 93° with an average low of 65°. 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.
