S
M
T
W
T
F
S
31
58°
44°
1
59°
45°
2
59°
45°
3
60°
44°
4
59°
44°
5
59°
44°
6
60°
45°
7
60°
44°
8
61°
47°
9
62°
47°
10
62°
49°
11
64°
50°
12
70°
50°
13
69°
47°
14
70°
49°
15
70°
50°
16
69°
44°
17
68°
52°
18
72°
52°
19
73°
53°
20
73°
53°
21
72°
54°
22
74°
54°
23
68°
53°
24
74°
50°
25
74°
49°
26
73°
54°
27
74°
50°
28
72°
54°
29
73°
56°
30
74°
56°
1
74°
51°
2
73°
52°
3
72°
55°
4
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Dartmouth
Dartmouth's June 2026 forecast shows daily high temperatures ranging from 58° to 75°, with overnight lows between 44° and 56°. The average high for June is 68° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Dartmouth. See also: July | August | September.