S
M
T
W
T
F
S
31
70°
41°
1
61°
39°
2
74°
37°
3
79°
43°
4
80°
49°
5
87°
51°
6
81°
55°
7
82°
58°
8
76°
50°
9
79°
51°
10
77°
63°
11
84°
68°
12
84°
66°
13
85°
59°
14
78°
64°
15
82°
64°
16
79°
62°
17
78°
61°
18
76°
63°
19
76°
65°
20
79°
64°
21
77°
63°
22
79°
63°
23
76°
62°
24
76°
64°
25
78°
66°
26
77°
60°
27
76°
60°
28
76°
61°
29
77°
61°
30
77°
62°
1
76°
65°
2
78°
68°
3
81°
68°
4
81°
67°
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 76° to 85°, with overnight lows between 59° and 68°. The average high for June is 79° with an average low of 64°. 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.