S
M
T
W
T
F
S
31
74°
49°
1
75°
51°
2
75°
50°
3
81°
55°
4
83°
61°
5
85°
66°
6
82°
66°
7
80°
66°
8
78°
64°
9
79°
64°
10
77°
65°
11
82°
64°
12
79°
65°
13
82°
67°
14
83°
64°
15
79°
60°
16
71°
56°
17
73°
56°
18
74°
57°
19
75°
57°
20
76°
61°
21
76°
64°
22
77°
65°
23
78°
65°
24
77°
61°
25
76°
58°
26
77°
66°
27
82°
66°
28
78°
61°
29
77°
60°
30
76°
59°
1
76°
59°
2
77°
60°
3
79°
67°
4
79°
63°
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 71° to 85°, with overnight lows between 50° and 67°. The average high for June is 78° with an average low of 62°. 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.
