S
M
T
W
T
F
S
28
82°
53°
29
83°
54°
30
83°
55°
1
91°
66°
2
91°
67°
3
90°
68°
4
82°
58°
5
83°
53°
6
81°
59°
7
78°
61°
8
85°
65°
9
89°
65°
10
79°
56°
11
78°
52°
12
82°
59°
13
83°
62°
14
90°
65°
15
83°
58°
16
75°
59°
17
81°
58°
18
76°
59°
19
78°
60°
20
77°
57°
21
78°
63°
22
75°
57°
23
76°
57°
24
83°
62°
25
82°
63°
26
83°
64°
27
84°
64°
28
82°
63°
29
82°
64°
30
83°
64°
31
80°
63°
1
76°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in New Haven
New Haven's July 2026 forecast shows daily high temperatures ranging from 75° to 90°, with overnight lows between 52° and 65°. The average high for July is 81° 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 July weather will actually feel in New Haven. See also: August | September | October.