S
M
T
W
T
F
S
27
73°
46°
28
76°
45°
29
79°
48°
30
64°
59°
1
68°
59°
2
65°
45°
3
69°
42°
4
71°
49°
5
70°
44°
6
73°
44°
7
78°
54°
8
71°
48°
9
70°
50°
10
82°
54°
11
78°
49°
12
87°
58°
13
78°
63°
14
64°
56°
15
64°
53°
16
57°
39°
17
56°
33°
18
62°
35°
19
66°
37°
20
68°
41°
21
71°
42°
22
73°
47°
23
71°
49°
24
69°
47°
25
73°
46°
26
63°
47°
27
67°
46°
28
75°
55°
29
70°
42°
30
62°
51°
31
60°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Marengo
Marengo's October 2026 forecast shows daily high temperatures ranging from 60° to 75°, with overnight lows between 42° and 55°. The average high for October is 67° with an average low of 50°. 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 Marengo. See also: November | December | January.
