S
M
T
W
T
F
S
28
82°
67°
29
90°
70°
30
90°
71°
1
93°
72°
2
95°
71°
3
86°
66°
4
86°
65°
5
82°
64°
6
83°
63°
7
84°
63°
8
83°
60°
9
77°
60°
10
83°
65°
11
82°
64°
12
80°
63°
13
82°
62°
14
81°
64°
15
83°
65°
16
81°
65°
17
84°
64°
18
84°
65°
19
82°
65°
20
81°
64°
21
80°
65°
22
80°
65°
23
84°
66°
24
83°
64°
25
81°
64°
26
80°
65°
27
83°
65°
28
84°
64°
29
83°
64°
30
82°
63°
31
78°
61°
1
77°
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 77° to 95°, with overnight lows between 60° and 72°. The average high for July is 83° with an average low of 65°. 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.
