S
M
T
W
T
F
S
26
80°
61°
27
81°
62°
28
82°
64°
29
82°
65°
30
83°
66°
31
86°
65°
1
88°
68°
2
88°
68°
3
87°
67°
4
87°
62°
5
83°
60°
6
81°
60°
7
80°
61°
8
80°
61°
9
81°
62°
10
82°
62°
11
84°
62°
12
86°
61°
13
87°
64°
14
86°
67°
15
88°
67°
16
87°
66°
17
84°
62°
18
81°
60°
19
81°
60°
20
82°
66°
21
80°
66°
22
81°
60°
23
80°
62°
24
83°
66°
25
80°
66°
26
87°
63°
27
80°
66°
28
82°
66°
29
86°
65°
30
85°
66°
31
84°
63°
1
83°
62°
2
84°
63°
3
83°
61°
4
84°
63°
5
84°
63°
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 80° to 88°, with overnight lows between 60° and 68°. The average high for August is 83° with an average low of 64°. 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.
