S
M
T
W
T
F
S
28
75°
59°
29
73°
54°
30
73°
59°
1
77°
57°
2
79°
61°
3
77°
55°
4
82°
57°
5
82°
59°
6
88°
61°
7
88°
63°
8
90°
66°
9
90°
61°
10
88°
64°
11
82°
63°
12
82°
61°
13
77°
59°
14
84°
61°
15
80°
62°
16
80°
58°
17
73°
58°
18
70°
56°
19
71°
55°
20
68°
56°
21
72°
55°
22
76°
58°
23
78°
60°
24
78°
62°
25
76°
60°
26
74°
61°
27
75°
60°
28
68°
57°
29
71°
59°
30
70°
58°
31
71°
59°
1
71°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Newhaven
Newhaven's July 2026 forecast shows daily high temperatures ranging from 68° to 80°, with overnight lows between 55° and 62°. The average high for July is 73° with an average low of 59°. 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 Newhaven. See also: August | September | October.