S
M
T
W
T
F
S
26
39°
32°
27
45°
36°
28
39°
34°
29
45°
32°
30
50°
27°
1
66°
41°
2
70°
39°
3
57°
43°
4
59°
43°
5
54°
37°
6
54°
32°
7
55°
32°
8
54°
37°
9
57°
32°
10
61°
39°
11
61°
46°
12
64°
45°
13
66°
50°
14
57°
41°
15
57°
37°
16
55°
48°
17
61°
46°
18
68°
43°
19
79°
57°
20
77°
54°
21
64°
52°
22
57°
52°
23
73°
52°
24
63°
54°
25
60°
47°
26
61°
44°
27
51°
39°
28
48°
42°
29
57°
41°
30
60°
43°
31
62°
46°
1
64°
47°
2
58°
44°
3
59°
45°
4
63°
47°
5
62°
47°
6
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lappeenranta
Lappeenranta's May 2026 forecast shows daily high temperatures ranging from 48° to 64°, with overnight lows between 39° and 48°. The average high for May is 59° with an average low of 45°. 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 Lappeenranta. See also: June | July | August.
