S
M
T
W
T
F
S
31
76°
52°
1
77°
53°
2
77°
55°
3
85°
51°
4
85°
65°
5
77°
61°
6
84°
59°
7
80°
59°
8
80°
66°
9
84°
66°
10
86°
68°
11
85°
67°
12
86°
64°
13
83°
60°
14
79°
60°
15
78°
57°
16
75°
57°
17
79°
58°
18
80°
61°
19
81°
62°
20
78°
61°
21
76°
54°
22
74°
55°
23
76°
63°
24
83°
65°
25
84°
59°
26
78°
56°
27
75°
59°
28
76°
61°
29
79°
63°
30
80°
62°
1
79°
63°
2
80°
64°
3
84°
64°
4
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Waterloo
Waterloo's June 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 54° and 68°. The average high for June is 80° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Waterloo. See also: July | August | September.
