S
M
T
W
T
F
S
27
75°
53°
28
77°
46°
29
81°
45°
30
67°
60°
1
71°
59°
2
68°
47°
3
71°
45°
4
74°
45°
5
73°
41°
6
76°
46°
7
81°
50°
8
78°
46°
9
79°
55°
10
82°
57°
11
82°
52°
12
87°
63°
13
82°
63°
14
67°
62°
15
66°
51°
16
53°
38°
17
57°
31°
18
64°
37°
19
69°
39°
20
71°
39°
21
73°
43°
22
76°
45°
23
74°
48°
24
73°
50°
25
78°
50°
26
74°
52°
27
69°
53°
28
74°
56°
29
76°
54°
30
72°
54°
31
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Monmouth
Monmouth's October 2026 forecast shows daily high temperatures ranging from 68° to 78°, with overnight lows between 50° and 56°. The average high for October is 73° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Monmouth. See also: November | December | January.