S
M
T
W
T
F
S
31
77°
46°
1
76°
50°
2
78°
50°
3
79°
54°
4
84°
59°
5
86°
62°
6
83°
65°
7
81°
64°
8
82°
64°
9
81°
63°
10
82°
65°
11
83°
65°
12
83°
60°
13
82°
63°
14
81°
60°
15
76°
57°
16
73°
56°
17
75°
56°
18
76°
57°
19
77°
58°
20
77°
64°
21
78°
64°
22
78°
63°
23
79°
64°
24
79°
62°
25
80°
62°
26
81°
66°
27
83°
65°
28
79°
61°
29
78°
59°
30
79°
58°
1
78°
59°
2
79°
59°
3
80°
66°
4
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Williamsport
Williamsport's June 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 50° 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 Williamsport. See also: July | August | September.
