S
M
T
W
T
F
S
31
73°
52°
1
73°
51°
2
68°
49°
3
71°
52°
4
74°
53°
5
74°
54°
6
73°
53°
7
71°
53°
8
66°
52°
9
67°
54°
10
74°
56°
11
74°
56°
12
73°
52°
13
69°
49°
14
67°
52°
15
68°
52°
16
68°
50°
17
70°
55°
18
73°
54°
19
70°
49°
20
73°
51°
21
77°
50°
22
78°
56°
23
79°
48°
24
74°
49°
25
71°
51°
26
72°
52°
27
72°
57°
28
77°
50°
29
77°
57°
30
79°
50°
1
73°
48°
2
73°
49°
3
74°
52°
4
74°
50°
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 66° to 79°, with overnight lows between 48° and 57°. The average high for June is 73° with an average low of 52°. 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.
