S
M
T
W
T
F
S
29
77°
46°
30
91°
50°
31
70°
52°
1
52°
43°
2
61°
43°
3
72°
36°
4
55°
34°
5
66°
21°
6
61°
36°
7
64°
36°
8
79°
46°
9
79°
43°
10
61°
41°
11
75°
50°
12
77°
64°
13
90°
66°
14
88°
63°
15
77°
50°
16
86°
46°
17
77°
43°
18
59°
32°
19
72°
32°
20
82°
45°
21
86°
59°
22
75°
59°
23
84°
55°
24
70°
43°
25
73°
46°
26
68°
48°
27
61°
46°
28
55°
39°
29
63°
36°
30
64°
37°
1
64°
34°
2
68°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Duluth
Duluth's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April 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 April weather will actually feel in Duluth. See also: May | June | July.