S
M
T
W
T
F
S
31
64°
55°
1
66°
57°
2
64°
55°
3
66°
54°
4
63°
54°
5
61°
50°
6
64°
50°
7
63°
54°
8
59°
52°
9
61°
50°
10
59°
46°
11
63°
48°
12
68°
55°
13
61°
54°
14
63°
52°
15
N/A
16
68°
60°
17
68°
58°
18
71°
61°
19
70°
59°
20
66°
58°
21
72°
60°
22
67°
55°
23
66°
57°
24
69°
58°
25
70°
56°
26
69°
57°
27
70°
58°
28
69°
54°
29
65°
53°
30
68°
53°
1
64°
51°
2
63°
51°
3
63°
50°
4
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Waterloo
Waterloo's June 2026 forecast shows daily high temperatures ranging from 63° to 72°, with overnight lows between 50° and 61°. The average high for June is 67° with an average low of 56°. 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.
