S
M
T
W
T
F
S
26
43°
30°
27
36°
24°
28
37°
23°
29
37°
27°
30
42°
27°
1
48°
28°
2
46°
33°
3
44°
32°
4
47°
33°
5
43°
33°
6
43°
35°
7
54°
35°
8
44°
34°
9
49°
34°
10
58°
31°
11
49°
37°
12
43°
36°
13
40°
35°
14
47°
35°
15
53°
37°
16
56°
38°
17
45°
38°
18
49°
36°
19
47°
33°
20
46°
35°
21
45°
36°
22
49°
35°
23
47°
34°
24
49°
36°
25
48°
37°
26
47°
37°
27
49°
38°
28
50°
37°
29
53°
48°
30
49°
40°
31
45°
39°
1
45°
40°
2
46°
39°
3
46°
35°
4
47°
36°
5
47°
41°
6
48°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Blanc-Sablon
Blanc-Sablon's May 2026 forecast shows daily high temperatures ranging from 45° to 56°, with overnight lows between 33° and 48°. The average high for May is 48° with an average low of 38°. 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 Blanc-Sablon. See also: June | July | August.