S
M
T
W
T
F
S
31
72°
54°
1
67°
54°
2
66°
54°
3
67°
53°
4
62°
51°
5
60°
53°
6
62°
55°
7
61°
52°
8
62°
49°
9
60°
52°
10
61°
53°
11
64°
52°
12
66°
54°
13
64°
52°
14
65°
53°
15
66°
54°
16
61°
55°
17
68°
56°
18
67°
56°
19
62°
56°
20
63°
55°
21
66°
56°
22
68°
57°
23
68°
57°
24
67°
56°
25
68°
57°
26
69°
57°
27
68°
56°
28
69°
58°
29
69°
58°
30
70°
57°
1
68°
57°
2
69°
58°
3
69°
58°
4
70°
59°
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 60° to 70°, with overnight lows between 49° and 59°. The average high for June is 66° 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 June weather will actually feel in Dartmouth. See also: July | August | September.