S
M
T
W
T
F
S
26
31°
13°
27
46°
16°
28
54°
20°
29
64°
19°
30
71°
25°
1
66°
36°
2
68°
42°
3
71°
34°
4
55°
30°
5
57°
32°
6
72°
41°
7
70°
39°
8
69°
41°
9
64°
38°
10
69°
40°
11
66°
39°
12
68°
40°
13
65°
41°
14
62°
36°
15
61°
38°
16
64°
38°
17
66°
41°
18
66°
42°
19
57°
42°
20
57°
40°
21
60°
42°
22
58°
43°
23
59°
42°
24
61°
39°
25
67°
42°
26
69°
44°
27
69°
43°
28
58°
40°
29
59°
37°
30
60°
41°
31
65°
45°
1
61°
45°
2
61°
44°
3
66°
46°
4
61°
46°
5
60°
45°
6
63°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sylvan Lake
Sylvan Lake's May 2026 forecast shows daily high temperatures ranging from 55° to 72°, with overnight lows between 30° and 47°. The average high for May is 64° with an average low of 41°. 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 Sylvan Lake. See also: June | July | August.
