S
M
T
W
T
F
S
28
75°
61°
29
78°
66°
30
89°
65°
1
92°
71°
2
96°
79°
3
100°
78°
4
95°
67°
5
85°
64°
6
77°
62°
7
76°
60°
8
80°
64°
9
87°
66°
10
91°
68°
11
88°
65°
12
82°
64°
13
85°
64°
14
83°
65°
15
84°
64°
16
80°
62°
17
80°
65°
18
80°
66°
19
81°
66°
20
82°
67°
21
80°
68°
22
81°
68°
23
81°
67°
24
82°
67°
25
82°
66°
26
83°
67°
27
82°
68°
28
84°
67°
29
86°
68°
30
85°
69°
31
86°
69°
1
87°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Old Cambridge
Old Cambridge's July 2026 forecast shows daily high temperatures ranging from 76° to 100°, with overnight lows between 60° and 79°. The average high for July is 84° with an average low of 67°. 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 Old Cambridge. See also: August | September | October.