S
M
T
W
T
F
S
26
32°
21°
27
46°
19°
28
45°
25°
29
59°
27°
30
63°
32°
1
52°
37°
2
63°
30°
3
48°
34°
4
45°
30°
5
54°
28°
6
66°
36°
7
61°
37°
8
52°
37°
9
66°
39°
10
63°
46°
11
57°
41°
12
57°
45°
13
73°
48°
14
52°
37°
15
48°
36°
16
54°
36°
17
52°
37°
18
63°
32°
19
59°
41°
20
54°
41°
21
66°
37°
22
68°
48°
23
73°
48°
24
61°
45°
25
72°
39°
26
66°
45°
27
70°
48°
28
83°
45°
29
86°
51°
30
61°
50°
31
53°
47°
1
52°
47°
2
52°
44°
3
59°
45°
4
55°
47°
5
65°
48°
6
63°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Slave Lake
Slave Lake's May 2026 forecast shows daily high temperatures ranging from 52° to 86°, with overnight lows between 44° and 51°. The average high for May is 61° with an average low of 48°. 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 Slave Lake. See also: June | July | August.
