S
M
T
W
T
F
S
26
63°
35°
27
70°
37°
28
69°
48°
29
58°
49°
30
49°
35°
1
48°
30°
2
43°
33°
3
51°
33°
4
60°
36°
5
64°
47°
6
51°
41°
7
47°
36°
8
50°
35°
9
64°
40°
10
52°
40°
11
51°
37°
12
52°
31°
13
49°
40°
14
52°
44°
15
63°
46°
16
69°
50°
17
67°
43°
18
75°
60°
19
77°
62°
20
69°
36°
21
57°
35°
22
63°
42°
23
65°
48°
24
68°
47°
25
68°
47°
26
67°
46°
27
65°
50°
28
69°
48°
29
67°
46°
30
70°
50°
31
63°
48°
1
66°
48°
2
66°
51°
3
67°
51°
4
65°
52°
5
66°
52°
6
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lac-Simon
Lac-Simon's May 2026 forecast shows daily high temperatures ranging from 57° to 77°, with overnight lows between 35° and 62°. The average high for May is 67° with an average low of 48°. 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 Lac-Simon. See also: June | July | August.
