S
M
T
W
T
F
S
28
76°
61°
29
79°
59°
30
76°
59°
1
81°
70°
2
85°
71°
3
96°
75°
4
89°
69°
5
81°
63°
6
74°
65°
7
77°
64°
8
76°
66°
9
81°
67°
10
80°
68°
11
80°
67°
12
81°
68°
13
81°
67°
14
82°
65°
15
74°
63°
16
73°
63°
17
74°
67°
18
75°
68°
19
75°
68°
20
76°
67°
21
75°
68°
22
75°
69°
23
76°
69°
24
76°
68°
25
77°
69°
26
76°
68°
27
77°
69°
28
79°
68°
29
78°
69°
30
79°
70°
31
81°
70°
1
80°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Harwich Center
Harwich Center's July 2026 forecast shows daily high temperatures ranging from 73° to 96°, with overnight lows between 63° and 75°. The average high for July is 79° with an average low of 68°. 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 Harwich Center. See also: August | September | October.