S
M
T
W
T
F
S
28
77°
50°
29
77°
57°
30
79°
50°
1
73°
48°
2
73°
49°
3
74°
52°
4
74°
50°
5
75°
49°
6
74°
50°
7
74°
51°
8
75°
51°
9
74°
54°
10
74°
54°
11
77°
55°
12
81°
59°
13
82°
60°
14
77°
55°
15
75°
53°
16
73°
52°
17
75°
54°
18
76°
51°
19
77°
53°
20
76°
51°
21
75°
52°
22
76°
52°
23
80°
54°
24
79°
54°
25
78°
52°
26
80°
59°
27
82°
56°
28
81°
51°
29
75°
50°
30
76°
52°
31
75°
53°
1
76°
54°
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 73° to 82°, with overnight lows between 48° and 60°. The average high for July is 76° 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.
