S
M
T
W
T
F
S
26
61°
41°
27
64°
41°
28
59°
46°
29
59°
50°
30
63°
49°
1
73°
48°
2
68°
51°
3
68°
54°
4
61°
52°
5
60°
48°
6
58°
45°
7
55°
41°
8
64°
39°
9
64°
43°
10
55°
39°
11
55°
34°
12
63°
34°
13
59°
43°
14
50°
39°
15
57°
41°
16
59°
41°
17
64°
48°
18
N/A
19
64°
53°
20
68°
53°
21
70°
54°
22
72°
58°
23
74°
56°
24
69°
52°
25
69°
51°
26
70°
55°
27
73°
56°
28
70°
53°
29
68°
52°
30
69°
53°
31
63°
47°
1
62°
46°
2
63°
45°
3
66°
50°
4
67°
52°
5
69°
52°
6
70°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in St Lawrence
St Lawrence's May 2026 forecast shows daily high temperatures ranging from 62° to 74°, with overnight lows between 45° and 58°. The average high for May is 68° with an average low of 52°. 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 Lawrence. See also: June | July | August.