S
M
T
W
T
F
S
26
59°
34°
27
66°
35°
28
59°
35°
29
66°
44°
30
54°
41°
1
43°
33°
2
51°
34°
3
51°
35°
4
51°
30°
5
69°
41°
6
49°
41°
7
51°
40°
8
51°
36°
9
61°
38°
10
63°
43°
11
52°
36°
12
47°
36°
13
55°
33°
14
54°
41°
15
60°
40°
16
71°
49°
17
54°
32°
18
60°
47°
19
65°
58°
20
74°
32°
21
48°
31°
22
53°
39°
23
53°
41°
24
54°
43°
25
59°
44°
26
61°
45°
27
58°
45°
28
59°
48°
29
62°
49°
30
61°
39°
31
63°
42°
1
58°
41°
2
58°
43°
3
59°
44°
4
58°
44°
5
58°
45°
6
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Saint-Athanase
Saint-Athanase's May 2026 forecast shows daily high temperatures ranging from 48° to 74°, with overnight lows between 31° and 58°. The average high for May is 59° with an average low of 43°. 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 Saint-Athanase. See also: June | July | August.