S
M
T
W
T
F
S
28
94°
73°
29
95°
73°
30
97°
74°
1
99°
74°
2
96°
72°
3
96°
71°
4
92°
71°
5
91°
71°
6
85°
71°
7
88°
71°
8
91°
72°
9
90°
73°
10
90°
71°
11
85°
72°
12
86°
70°
13
87°
71°
14
93°
74°
15
91°
69°
16
90°
73°
17
91°
72°
18
102°
80°
19
93°
74°
20
95°
74°
21
94°
73°
22
90°
74°
23
93°
73°
24
93°
72°
25
91°
71°
26
89°
72°
27
91°
73°
28
90°
73°
29
89°
72°
30
90°
74°
31
93°
74°
1
93°
73°
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 85° to 102°, with overnight lows between 69° and 80°. The average high for July is 91° with an average low of 73°. 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.