S
M
T
W
T
F
S
27
76°
54°
28
76°
54°
29
73°
52°
30
74°
50°
1
71°
47°
2
67°
51°
3
71°
51°
4
74°
53°
5
74°
52°
6
73°
51°
7
71°
52°
8
72°
50°
9
69°
50°
10
68°
48°
11
70°
41°
12
57°
37°
13
56°
36°
14
56°
37°
15
57°
37°
16
56°
38°
17
55°
34°
18
53°
36°
19
53°
37°
20
54°
38°
21
53°
38°
22
54°
43°
23
69°
37°
24
68°
39°
25
57°
35°
26
58°
32°
27
50°
29°
28
48°
36°
29
49°
41°
30
51°
32°
31
53°
29°
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 48° to 76°, with overnight lows between 29° and 54°. The average high for October is 62° 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.
