S
M
T
W
T
F
S
31
62°
48°
1
63°
47°
2
63°
45°
3
64°
48°
4
68°
49°
5
64°
45°
6
64°
46°
7
63°
45°
8
64°
49°
9
65°
48°
10
64°
46°
11
65°
45°
12
63°
47°
13
64°
47°
14
64°
46°
15
65°
47°
16
64°
48°
17
65°
49°
18
65°
50°
19
66°
49°
20
65°
52°
21
68°
52°
22
72°
53°
23
74°
51°
24
74°
52°
25
73°
50°
26
73°
54°
27
69°
53°
28
73°
54°
29
74°
55°
30
74°
55°
1
73°
52°
2
73°
50°
3
74°
56°
4
74°
54°
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 62° to 74°, with overnight lows between 45° and 56°. The average high for June is 68° with an average low of 50°. 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.
