S
M
T
W
T
F
S
26
59°
38°
27
71°
35°
28
56°
39°
29
57°
47°
30
60°
41°
1
64°
34°
2
57°
41°
3
61°
38°
4
72°
36°
5
82°
50°
6
66°
49°
7
64°
44°
8
63°
36°
9
58°
45°
10
66°
44°
11
63°
44°
12
68°
32°
13
67°
50°
14
57°
46°
15
67°
45°
16
80°
40°
17
89°
59°
18
93°
56°
19
93°
63°
20
88°
57°
21
57°
51°
22
68°
47°
23
52°
44°
24
56°
48°
25
77°
54°
26
82°
49°
27
86°
62°
28
73°
53°
29
78°
45°
30
65°
45°
31
77°
39°
1
75°
47°
2
77°
44°
3
82°
49°
4
86°
46°
5
90°
48°
6
85°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Clair
St. Clair's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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. Clair. See also: June | July | August.
