S
M
T
W
T
F
S
27
74°
55°
28
78°
57°
29
81°
52°
30
76°
42°
1
75°
39°
2
67°
48°
3
68°
45°
4
67°
43°
5
73°
46°
6
73°
39°
7
64°
48°
8
68°
37°
9
65°
38°
10
63°
35°
11
61°
40°
12
63°
41°
13
59°
42°
14
64°
48°
15
69°
49°
16
70°
45°
17
69°
37°
18
61°
38°
19
54°
37°
20
59°
44°
21
65°
46°
22
65°
45°
23
66°
38°
24
64°
35°
25
52°
39°
26
56°
36°
27
53°
30°
28
51°
26°
29
49°
27°
30
50°
34°
31
54°
30°
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 49° to 81°, with overnight lows between 26° and 57°. The average high for October is 64° with an average low of 41°. 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.
