S
M
T
W
T
F
S
26
77°
41°
27
73°
45°
28
64°
48°
29
66°
43°
30
72°
45°
1
72°
50°
2
73°
45°
3
59°
52°
4
68°
43°
5
72°
37°
6
75°
39°
7
73°
48°
8
70°
48°
9
73°
39°
10
79°
41°
11
75°
45°
12
72°
59°
13
81°
55°
14
86°
55°
15
88°
54°
16
86°
54°
17
86°
52°
18
88°
54°
19
82°
57°
20
73°
59°
21
N/A
22
76°
57°
23
73°
54°
24
84°
56°
25
87°
64°
26
75°
63°
27
90°
66°
28
84°
56°
29
85°
55°
30
85°
64°
31
80°
57°
1
80°
57°
2
81°
60°
3
78°
61°
4
80°
60°
5
80°
62°
6
79°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Daejeon
Daejeon's May 2026 forecast shows daily high temperatures ranging from 73° to 90°, with overnight lows between 54° and 66°. The average high for May is 81° with an average low of 60°. 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 Daejeon. See also: June | July | August.