S
M
T
W
T
F
S
27
78°
44°
28
73°
44°
29
68°
46°
30
68°
53°
1
71°
53°
2
76°
52°
3
76°
53°
4
77°
52°
5
77°
53°
6
76°
51°
7
77°
42°
8
74°
41°
9
63°
40°
10
61°
40°
11
63°
45°
12
62°
50°
13
67°
52°
14
73°
42°
15
74°
42°
16
67°
41°
17
67°
37°
18
59°
40°
19
61°
37°
20
58°
45°
21
62°
45°
22
66°
43°
23
68°
40°
24
59°
34°
25
56°
44°
26
57°
43°
27
60°
33°
28
54°
31°
29
52°
30°
30
49°
32°
31
58°
42°
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 49° to 78°, with overnight lows between 30° and 53°. The average high for October is 66° with an average low of 43°. 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.