S
M
T
W
T
F
S
28
74°
62°
29
72°
59°
30
70°
59°
1
70°
57°
2
72°
58°
3
63°
50°
4
70°
57°
5
69°
56°
6
69°
56°
7
68°
55°
8
69°
54°
9
65°
54°
10
65°
56°
11
66°
56°
12
69°
55°
13
68°
56°
14
67°
56°
15
70°
57°
16
70°
56°
17
66°
57°
18
71°
57°
19
67°
56°
20
66°
55°
21
68°
57°
22
67°
56°
23
66°
54°
24
66°
53°
25
67°
55°
26
69°
54°
27
68°
57°
28
70°
54°
29
67°
52°
30
70°
53°
31
72°
58°
1
72°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Waterloo
Waterloo's July 2026 forecast shows daily high temperatures ranging from 63° to 74°, with overnight lows between 50° and 62°. The average high for July is 69° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Waterloo. See also: August | September | October.
