S
M
T
W
T
F
S
26
55°
41°
27
55°
43°
28
54°
39°
29
54°
34°
30
50°
32°
1
54°
37°
2
66°
37°
3
70°
46°
4
59°
43°
5
50°
34°
6
45°
30°
7
59°
25°
8
70°
32°
9
59°
43°
10
57°
36°
11
68°
32°
12
68°
50°
13
73°
41°
14
78°
55°
15
88°
56°
16
82°
58°
17
72°
60°
18
70°
44°
19
57°
43°
20
62°
45°
21
61°
47°
22
67°
50°
23
70°
53°
24
70°
55°
25
72°
56°
26
74°
55°
27
72°
51°
28
65°
50°
29
65°
49°
30
66°
49°
31
68°
48°
1
68°
48°
2
69°
53°
3
70°
59°
4
75°
60°
5
80°
61°
6
80°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Bonifacius
St. Bonifacius's May 2026 forecast shows daily high temperatures ranging from 57° to 88°, with overnight lows between 43° and 61°. The average high for May is 71° with an average low of 53°. 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 St. Bonifacius. See also: June | July | August.