S
M
T
W
T
F
S
31
77°
45°
1
76°
50°
2
78°
52°
3
83°
53°
4
90°
62°
5
95°
65°
6
94°
69°
7
82°
57°
8
70°
53°
9
77°
54°
10
78°
59°
11
80°
60°
12
81°
60°
13
82°
62°
14
83°
61°
15
87°
58°
16
75°
55°
17
76°
56°
18
77°
56°
19
79°
57°
20
82°
58°
21
82°
60°
22
78°
59°
23
78°
63°
24
79°
63°
25
82°
59°
26
79°
58°
27
84°
65°
28
85°
64°
29
83°
61°
30
81°
59°
1
80°
59°
2
80°
61°
3
82°
65°
4
86°
66°
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 70° to 95°, with overnight lows between 52° and 69°. The average high for June is 81° with an average low of 60°. 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.
