S
M
T
W
T
F
S
26
68°
48°
27
61°
46°
28
55°
39°
29
63°
36°
30
64°
37°
1
64°
34°
2
68°
30°
3
81°
52°
4
86°
46°
5
55°
45°
6
63°
41°
7
77°
41°
8
73°
50°
9
82°
41°
10
73°
50°
11
82°
46°
12
86°
54°
13
81°
43°
14
81°
54°
15
91°
63°
16
90°
63°
17
88°
59°
18
81°
52°
19
61°
46°
20
64°
41°
21
61°
52°
22
77°
59°
23
77°
50°
24
82°
48°
25
86°
61°
26
86°
59°
27
82°
59°
28
79°
63°
29
79°
66°
30
82°
64°
31
84°
63°
1
88°
64°
2
81°
64°
3
82°
61°
4
81°
68°
5
88°
66°
6
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Duluth
Duluth's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Duluth. See also: June | July | August.
