S
M
T
W
T
F
S
26
84°
66°
27
80°
61°
28
81°
63°
29
83°
66°
30
84°
61°
31
84°
63°
1
85°
61°
2
83°
60°
3
82°
59°
4
79°
58°
5
80°
59°
6
80°
59°
7
81°
58°
8
83°
62°
9
81°
64°
10
79°
64°
11
82°
66°
12
83°
66°
13
83°
65°
14
87°
59°
15
86°
58°
16
79°
61°
17
80°
65°
18
83°
58°
19
83°
57°
20
79°
58°
21
79°
58°
22
82°
61°
23
83°
64°
24
84°
65°
25
86°
57°
26
86°
58°
27
78°
59°
28
78°
58°
29
79°
62°
30
81°
63°
31
85°
63°
1
85°
58°
2
83°
59°
3
83°
60°
4
77°
60°
5
77°
59°
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 77° to 87°, with overnight lows between 57° and 66°. The average high for August is 82° with an average low of 61°. 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.
