S
M
T
W
T
F
S
27
73°
43°
28
73°
42°
29
73°
51°
30
73°
56°
1
79°
49°
2
79°
50°
3
79°
49°
4
81°
49°
5
79°
48°
6
76°
55°
7
77°
48°
8
80°
51°
9
64°
42°
10
61°
41°
11
68°
42°
12
70°
39°
13
67°
47°
14
69°
44°
15
68°
45°
16
70°
46°
17
68°
45°
18
66°
46°
19
67°
46°
20
66°
43°
21
62°
44°
22
65°
42°
23
66°
46°
24
60°
43°
25
63°
44°
26
63°
44°
27
62°
45°
28
59°
44°
29
61°
42°
30
61°
45°
31
54°
41°
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 54° to 80°, with overnight lows between 39° and 51°. The average high for October is 65° with an average low of 44°. 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.
