S
M
T
W
T
F
S
31
89°
53°
1
94°
55°
2
95°
54°
3
92°
55°
4
94°
57°
5
97°
54°
6
88°
56°
7
86°
57°
8
88°
56°
9
93°
61°
10
95°
64°
11
97°
62°
12
98°
61°
13
96°
62°
14
87°
58°
15
90°
61°
16
92°
62°
17
93°
61°
18
93°
61°
19
92°
60°
20
92°
60°
21
93°
61°
22
93°
61°
23
92°
60°
24
93°
61°
25
94°
61°
26
93°
60°
27
91°
60°
28
93°
62°
29
94°
62°
30
95°
61°
1
95°
63°
2
94°
63°
3
95°
64°
4
95°
63°
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 86° to 98°, with overnight lows between 54° and 64°. The average high for June is 93° with an average low of 60°. 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.
