S
M
T
W
T
F
S
27
65°
56°
28
74°
55°
29
72°
64°
30
72°
63°
1
66°
47°
2
66°
44°
3
66°
49°
4
67°
43°
5
66°
46°
6
69°
51°
7
69°
45°
8
67°
46°
9
67°
46°
10
66°
45°
11
67°
47°
12
64°
39°
13
61°
43°
14
58°
42°
15
63°
47°
16
69°
48°
17
69°
48°
18
68°
47°
19
67°
45°
20
66°
45°
21
64°
41°
22
57°
38°
23
62°
45°
24
65°
45°
25
66°
43°
26
60°
38°
27
55°
40°
28
59°
44°
29
62°
44°
30
62°
43°
31
61°
42°
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 55° to 72°, with overnight lows between 38° and 64°. The average high for October is 65° with an average low of 46°. 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.
