S
M
T
W
T
F
S
27
69°
50°
28
68°
48°
29
63°
48°
30
66°
49°
1
66°
48°
2
61°
48°
3
62°
46°
4
65°
49°
5
66°
49°
6
66°
47°
7
63°
46°
8
64°
47°
9
64°
46°
10
61°
47°
11
64°
42°
12
52°
37°
13
50°
35°
14
49°
36°
15
48°
35°
16
49°
40°
17
50°
35°
18
48°
34°
19
48°
34°
20
47°
35°
21
48°
36°
22
47°
37°
23
60°
41°
24
62°
34°
25
59°
31°
26
47°
30°
27
44°
27°
28
43°
26°
29
43°
32°
30
46°
40°
31
51°
35°
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 43° to 69°, with overnight lows between 26° and 50°. The average high for October is 56° with an average low of 40°. 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.
