S
M
T
W
T
F
S
27
65°
56°
28
74°
55°
29
73°
53°
30
70°
64°
1
69°
48°
2
68°
42°
3
72°
44°
4
71°
46°
5
74°
40°
6
81°
51°
7
78°
48°
8
75°
46°
9
80°
54°
10
87°
57°
11
89°
58°
12
89°
61°
13
72°
56°
14
62°
48°
15
58°
45°
16
52°
31°
17
58°
38°
18
65°
42°
19
64°
43°
20
69°
46°
21
69°
50°
22
65°
50°
23
67°
51°
24
63°
42°
25
60°
40°
26
60°
41°
27
58°
42°
28
46°
28°
29
53°
42°
30
57°
39°
31
61°
41°
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 46° to 69°, with overnight lows between 28° and 51°. The average high for October is 60° 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 Waterloo. See also: November | December | January.
