S
M
T
W
T
F
S
26
95°
66°
27
94°
66°
28
94°
67°
29
95°
67°
30
95°
68°
31
94°
68°
1
95°
66°
2
94°
65°
3
91°
66°
4
91°
67°
5
92°
66°
6
95°
66°
7
94°
65°
8
93°
66°
9
94°
65°
10
96°
67°
11
95°
66°
12
97°
66°
13
95°
65°
14
96°
65°
15
90°
65°
16
93°
68°
17
92°
63°
18
91°
65°
19
Hist. Avg.
84°
66°
20
Hist. Avg.
84°
66°
21
Hist. Avg.
84°
66°
22
Hist. Avg.
84°
66°
23
Hist. Avg.
84°
66°
24
Hist. Avg.
84°
66°
25
Hist. Avg.
84°
66°
26
Hist. Avg.
84°
66°
27
Hist. Avg.
84°
66°
28
Hist. Avg.
84°
66°
29
Hist. Avg.
84°
66°
30
Hist. Avg.
84°
66°
31
Hist. Avg.
84°
66°
1
Hist. Avg.
84°
66°
2
Hist. Avg.
84°
66°
3
Hist. Avg.
84°
66°
4
Hist. Avg.
84°
66°
5
Hist. Avg.
84°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Glendora
Glendora's August 2026 forecast shows daily high temperatures ranging from 90° to 97°, with overnight lows between 63° and 68°. The average high for August is 94° with an average low of 66°. 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 Glendora. See also: September | October | November.