S
M
T
W
T
F
S
26
85°
69°
27
86°
70°
28
85°
69°
29
83°
69°
30
83°
68°
31
86°
70°
1
87°
69°
2
86°
70°
3
86°
68°
4
86°
69°
5
85°
67°
6
80°
68°
7
83°
63°
8
81°
62°
9
80°
63°
10
81°
63°
11
84°
68°
12
86°
68°
13
86°
67°
14
85°
62°
15
82°
62°
16
80°
67°
17
80°
67°
18
83°
62°
19
81°
62°
20
79°
61°
21
80°
61°
22
81°
62°
23
81°
61°
24
82°
61°
25
82°
62°
26
83°
65°
27
84°
66°
28
85°
67°
29
85°
67°
30
84°
65°
31
83°
59°
1
79°
57°
2
76°
59°
3
77°
59°
4
78°
60°
5
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Monrovia
Monrovia's August 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 57° and 70°. The average high for August is 83° 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 Monrovia. See also: September | October | November.
