S
M
T
W
T
F
S
26
91°
73°
27
93°
76°
28
84°
67°
29
83°
60°
30
83°
59°
31
78°
66°
1
70°
60°
2
80°
59°
3
81°
59°
4
84°
63°
5
82°
65°
6
81°
61°
7
82°
64°
8
83°
66°
9
87°
64°
10
81°
63°
11
83°
62°
12
82°
59°
13
81°
63°
14
83°
61°
15
78°
60°
16
79°
66°
17
88°
68°
18
88°
67°
19
87°
67°
20
86°
65°
21
86°
66°
22
87°
67°
23
87°
66°
24
85°
66°
25
85°
65°
26
84°
64°
27
85°
63°
28
85°
64°
29
84°
63°
30
85°
64°
31
85°
64°
1
86°
63°
2
85°
64°
3
85°
63°
4
84°
63°
5
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Monmouth
Monmouth's August 2026 forecast shows daily high temperatures ranging from 70° to 88°, with overnight lows between 59° and 68°. The average high for August is 84° 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 Monmouth. See also: September | October | November.
