S
M
T
W
T
F
S
27
74°
42°
28
74°
49°
29
77°
47°
30
69°
54°
1
86°
63°
2
65°
50°
3
66°
42°
4
72°
45°
5
64°
39°
6
66°
48°
7
72°
47°
8
70°
47°
9
68°
48°
10
72°
51°
11
73°
55°
12
71°
49°
13
65°
44°
14
63°
45°
15
66°
43°
16
62°
41°
17
66°
46°
18
65°
46°
19
57°
39°
20
59°
42°
21
55°
42°
22
54°
39°
23
58°
42°
24
55°
40°
25
50°
35°
26
50°
37°
27
51°
33°
28
52°
39°
29
59°
44°
30
61°
43°
31
60°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Waterloo
Waterloo's October 2026 forecast shows daily high temperatures ranging from 50° to 73°, with overnight lows between 33° and 55°. The average high for October is 62° 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 Waterloo. See also: November | December | January.
