S
M
T
W
T
F
S
26
81°
67°
27
81°
66°
28
81°
64°
29
80°
69°
30
81°
70°
31
81°
63°
1
81°
69°
2
82°
70°
3
84°
64°
4
83°
63°
5
80°
64°
6
80°
63°
7
81°
65°
8
79°
63°
9
79°
66°
10
83°
67°
11
80°
65°
12
82°
68°
13
84°
69°
14
80°
69°
15
82°
68°
16
85°
62°
17
84°
62°
18
78°
63°
19
78°
67°
20
79°
62°
21
79°
62°
22
78°
66°
23
79°
67°
24
82°
68°
25
85°
67°
26
84°
60°
27
82°
60°
28
76°
60°
29
77°
61°
30
77°
63°
31
79°
66°
1
82°
67°
2
83°
65°
3
83°
63°
4
82°
66°
5
82°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Monmouth
Fort Monmouth's August 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 60° and 70°. The average high for August is 81° 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 Fort Monmouth. See also: September | October | November.