S
M
T
W
T
F
S
28
74°
58°
29
76°
58°
30
73°
56°
1
72°
54°
2
71°
58°
3
70°
56°
4
71°
52°
5
71°
52°
6
72°
58°
7
77°
60°
8
79°
59°
9
78°
58°
10
74°
58°
11
76°
60°
12
79°
57°
13
72°
54°
14
73°
56°
15
75°
59°
16
77°
59°
17
73°
54°
18
71°
52°
19
72°
59°
20
72°
59°
21
73°
58°
22
72°
57°
23
73°
56°
24
73°
56°
25
74°
58°
26
77°
59°
27
79°
56°
28
76°
54°
29
72°
58°
30
77°
58°
31
74°
59°
1
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Williamstown
Williamstown's July 2026 forecast shows daily high temperatures ranging from 70° to 79°, with overnight lows between 52° and 60°. The average high for July is 74° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Williamstown. See also: August | September | October.
