S
M
T
W
T
F
S
28
81°
59°
29
77°
54°
30
81°
46°
1
84°
55°
2
90°
55°
3
87°
55°
4
89°
64°
5
95°
61°
6
88°
63°
7
88°
60°
8
86°
61°
9
84°
60°
10
83°
62°
11
90°
64°
12
90°
64°
13
92°
63°
14
88°
60°
15
87°
59°
16
86°
55°
17
87°
60°
18
89°
60°
19
89°
61°
20
90°
61°
21
91°
62°
22
90°
61°
23
88°
61°
24
86°
60°
25
84°
60°
26
86°
59°
27
89°
60°
28
84°
59°
29
83°
60°
30
81°
57°
31
80°
55°
1
81°
58°
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 80° to 95°, with overnight lows between 55° and 64°. The average high for July is 87° with an average low of 60°. 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.