S
M
T
W
T
F
S
31
46°
39°
1
46°
40°
2
47°
38°
3
47°
38°
4
48°
39°
5
47°
39°
6
50°
41°
7
51°
43°
8
50°
41°
9
49°
40°
10
48°
41°
11
49°
42°
12
49°
42°
13
50°
43°
14
52°
43°
15
54°
44°
16
55°
45°
17
56°
45°
18
56°
44°
19
55°
45°
20
56°
44°
21
55°
44°
22
52°
45°
23
55°
45°
24
55°
46°
25
56°
46°
26
56°
45°
27
55°
46°
28
57°
47°
29
58°
48°
30
57°
47°
1
58°
46°
2
57°
47°
3
56°
46°
4
57°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Port William
Port William's June 2026 forecast shows daily high temperatures ranging from 46° to 58°, with overnight lows between 38° and 48°. The average high for June is 53° with an average low of 43°. 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 Port William. See also: July | August | September.