S
M
T
W
T
F
S
31
79°
58°
1
77°
58°
2
74°
57°
3
72°
59°
4
73°
60°
5
77°
58°
6
77°
60°
7
81°
62°
8
81°
63°
9
83°
61°
10
77°
55°
11
74°
55°
12
74°
54°
13
75°
55°
14
76°
57°
15
81°
63°
16
83°
64°
17
83°
63°
18
79°
59°
19
80°
57°
20
78°
57°
21
78°
59°
22
79°
66°
23
86°
66°
24
86°
65°
25
82°
66°
26
81°
64°
27
80°
62°
28
82°
66°
29
89°
65°
30
89°
63°
1
88°
63°
2
81°
61°
3
82°
60°
4
83°
61°
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 72° to 89°, with overnight lows between 54° and 66°. The average high for June is 80° with an average low of 61°. 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.
