S
M
T
W
T
F
S
28
85°
50°
29
84°
55°
30
80°
53°
1
75°
51°
2
76°
57°
3
79°
59°
4
86°
54°
5
87°
52°
6
87°
50°
7
85°
49°
8
80°
52°
9
82°
50°
10
82°
49°
11
80°
54°
12
80°
50°
13
79°
50°
14
80°
49°
15
79°
55°
16
82°
57°
17
87°
54°
18
87°
53°
19
83°
55°
20
84°
59°
21
85°
52°
22
83°
56°
23
84°
53°
24
85°
57°
25
84°
58°
26
83°
53°
27
84°
53°
28
83°
54°
29
84°
53°
30
83°
55°
31
83°
56°
1
85°
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 75° to 87°, with overnight lows between 49° and 59°. The average high for July is 83° 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.
