S
M
T
W
T
F
S
27
73°
52°
28
75°
52°
29
77°
48°
30
77°
53°
1
85°
62°
2
74°
50°
3
67°
46°
4
73°
43°
5
68°
37°
6
66°
43°
7
74°
48°
8
70°
45°
9
72°
47°
10
75°
50°
11
70°
52°
12
71°
53°
13
71°
47°
14
64°
43°
15
65°
42°
16
61°
41°
17
60°
40°
18
68°
46°
19
57°
38°
20
60°
40°
21
58°
43°
22
56°
37°
23
58°
41°
24
56°
38°
25
53°
35°
26
53°
38°
27
54°
34°
28
53°
34°
29
57°
43°
30
63°
43°
31
64°
44°
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 53° to 75°, with overnight lows between 34° and 53°. The average high for October is 63° with an average low of 42°. 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.
