S
M
T
W
T
F
S
31
84°
63°
1
88°
64°
2
81°
64°
3
82°
61°
4
81°
68°
5
88°
66°
6
86°
66°
7
82°
70°
8
88°
68°
9
90°
72°
10
91°
70°
11
84°
57°
12
82°
52°
13
86°
59°
14
75°
54°
15
81°
50°
16
81°
63°
17
88°
63°
18
79°
59°
19
79°
55°
20
73°
61°
21
72°
63°
22
77°
55°
23
75°
66°
24
81°
66°
25
72°
65°
26
77°
67°
27
87°
74°
28
91°
73°
29
90°
73°
30
91°
72°
1
90°
71°
2
93°
68°
3
92°
69°
4
93°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Duluth
Duluth's June 2026 forecast shows daily high temperatures ranging from 72° to 93°, with overnight lows between 65° and 74°. The average high for June is 86° with an average low of 69°. 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 Duluth. See also: July | August | September.