S
M
T
W
T
F
S
28
67°
49°
29
70°
55°
30
71°
55°
1
74°
53°
2
73°
52°
3
70°
51°
4
72°
50°
5
70°
54°
6
72°
52°
7
68°
51°
8
69°
55°
9
76°
54°
10
76°
57°
11
77°
58°
12
73°
59°
13
72°
57°
14
76°
59°
15
77°
58°
16
78°
54°
17
76°
59°
18
78°
59°
19
78°
58°
20
77°
55°
21
74°
53°
22
74°
53°
23
72°
54°
24
71°
52°
25
72°
52°
26
72°
54°
27
73°
54°
28
74°
59°
29
74°
55°
30
76°
60°
31
75°
60°
1
77°
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 67° to 78°, with overnight lows between 49° and 61°. The average high for July is 74° with an average low of 55°. 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.
