S
M
T
W
T
F
S
28
73°
57°
29
76°
57°
30
80°
59°
1
76°
57°
2
87°
61°
3
91°
64°
4
88°
64°
5
74°
51°
6
76°
50°
7
78°
51°
8
74°
49°
9
83°
58°
10
74°
58°
11
80°
56°
12
77°
55°
13
82°
56°
14
75°
59°
15
85°
62°
16
82°
52°
17
71°
51°
18
78°
56°
19
74°
58°
20
73°
55°
21
78°
54°
22
70°
61°
23
69°
58°
24
74°
55°
25
79°
51°
26
77°
50°
27
75°
50°
28
79°
59°
29
78°
58°
30
67°
60°
31
78°
64°
1
74°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Dartmouth
Dartmouth's July 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for July is ° with an average low of °. 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 Dartmouth. See also: August | September | October.