S
M
T
W
T
F
S
28
64°
52°
29
64°
52°
30
66°
57°
1
63°
55°
2
67°
51°
3
63°
55°
4
62°
56°
5
61°
55°
6
61°
55°
7
65°
54°
8
69°
56°
9
69°
55°
10
68°
53°
11
68°
53°
12
67°
52°
13
65°
51°
14
66°
53°
15
68°
54°
16
64°
53°
17
65°
54°
18
67°
54°
19
63°
53°
20
63°
54°
21
64°
54°
22
63°
52°
23
64°
54°
24
66°
54°
25
66°
53°
26
65°
54°
27
66°
54°
28
63°
50°
29
61°
50°
30
62°
52°
31
62°
54°
1
63°
53°
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 61° to 69°, with overnight lows between 50° and 56°. The average high for July is 65° with an average low of 53°. 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.
