S
M
T
W
T
F
S
26
86°
54°
27
87°
56°
28
86°
56°
29
79°
52°
30
79°
50°
31
78°
51°
1
78°
51°
2
79°
50°
3
82°
51°
4
79°
51°
5
79°
53°
6
81°
56°
7
79°
52°
8
84°
55°
9
87°
56°
10
87°
56°
11
86°
55°
12
87°
56°
13
86°
56°
14
86°
55°
15
85°
56°
16
83°
56°
17
86°
55°
18
86°
56°
19
85°
56°
20
85°
55°
21
86°
56°
22
85°
56°
23
86°
57°
24
83°
50°
25
80°
55°
26
84°
56°
27
85°
57°
28
87°
56°
29
88°
53°
30
86°
49°
31
85°
57°
1
85°
55°
2
84°
54°
3
85°
51°
4
85°
48°
5
84°
47°
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 78° to 88°, with overnight lows between 47° and 57°. The average high for August is 84° with an average low of 54°. 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.
