S
M
T
W
T
F
S
28
82°
61°
29
91°
63°
30
89°
60°
1
82°
63°
2
84°
68°
3
86°
68°
4
90°
62°
5
88°
65°
6
87°
66°
7
85°
60°
8
82°
60°
9
81°
59°
10
82°
63°
11
82°
66°
12
81°
68°
13
87°
66°
14
89°
61°
15
84°
61°
16
85°
62°
17
84°
62°
18
84°
63°
19
85°
60°
20
82°
59°
21
82°
59°
22
83°
65°
23
84°
64°
24
82°
60°
25
86°
66°
26
88°
61°
27
85°
58°
28
80°
60°
29
80°
61°
30
79°
60°
31
80°
59°
1
81°
60°
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 79° to 91°, with overnight lows between 58° and 68°. The average high for July is 84° with an average low of 62°. 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.
