S
M
T
W
T
F
S
31
73°
63°
1
79°
64°
2
77°
54°
3
79°
45°
4
84°
50°
5
88°
52°
6
86°
55°
7
88°
63°
8
91°
66°
9
86°
70°
10
88°
66°
11
93°
72°
12
97°
72°
13
100°
72°
14
94°
75°
15
91°
72°
16
84°
70°
17
86°
73°
18
92°
73°
19
90°
72°
20
89°
71°
21
88°
70°
22
91°
71°
23
89°
71°
24
86°
70°
25
89°
71°
26
87°
70°
27
89°
72°
28
86°
71°
29
86°
72°
30
88°
70°
1
86°
70°
2
86°
71°
3
88°
73°
4
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Allentown
Allentown's June 2026 forecast shows daily high temperatures ranging from 84° to 100°, with overnight lows between 70° and 75°. The average high for June is 89° with an average low of 72°. 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 Allentown. See also: July | August | September.
