S
M
T
W
T
F
S
28
90°
73°
29
91°
74°
30
92°
74°
1
90°
73°
2
89°
72°
3
90°
67°
4
89°
67°
5
90°
69°
6
88°
67°
7
95°
75°
8
80°
62°
9
81°
66°
10
86°
68°
11
84°
68°
12
86°
68°
13
83°
68°
14
83°
67°
15
85°
68°
16
88°
69°
17
89°
70°
18
88°
69°
19
86°
68°
20
83°
68°
21
83°
69°
22
86°
69°
23
87°
68°
24
86°
68°
25
85°
67°
26
87°
69°
27
88°
70°
28
89°
69°
29
88°
68°
30
86°
67°
31
78°
64°
1
81°
68°
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 78° to 95°, with overnight lows between 62° and 75°. The average high for July is 87° with an average low of 69°. 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.
