S
M
T
W
T
F
S
28
86°
56°
29
91°
58°
30
95°
60°
1
81°
58°
2
80°
60°
3
91°
57°
4
96°
58°
5
88°
54°
6
90°
54°
7
90°
55°
8
94°
56°
9
96°
60°
10
95°
61°
11
96°
62°
12
99°
67°
13
99°
69°
14
102°
66°
15
103°
68°
16
102°
67°
17
96°
62°
18
95°
62°
19
96°
64°
20
96°
64°
21
97°
65°
22
98°
65°
23
98°
64°
24
97°
65°
25
98°
65°
26
98°
64°
27
97°
64°
28
96°
63°
29
97°
64°
30
97°
64°
31
96°
65°
1
95°
63°
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 88° to 103°, with overnight lows between 54° and 69°. The average high for July is 96° with an average low of 63°. 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.
