S
M
T
W
T
F
S
31
75°
40°
1
74°
49°
2
75°
43°
3
81°
45°
4
85°
47°
5
88°
50°
6
85°
56°
7
81°
62°
8
74°
57°
9
80°
50°
10
85°
67°
11
93°
70°
12
94°
67°
13
89°
58°
14
89°
63°
15
78°
60°
16
77°
57°
17
78°
59°
18
79°
58°
19
82°
63°
20
83°
61°
21
81°
60°
22
80°
62°
23
81°
61°
24
79°
58°
25
80°
61°
26
84°
59°
27
78°
58°
28
79°
58°
29
80°
59°
30
80°
59°
1
81°
62°
2
86°
66°
3
87°
66°
4
82°
65°
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 77° to 94°, with overnight lows between 57° and 70°. The average high for June is 83° 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.
