S
M
T
W
T
F
S
26
73°
54°
27
66°
54°
28
75°
52°
29
68°
52°
30
72°
48°
31
70°
55°
1
79°
58°
2
62°
47°
3
66°
53°
4
71°
56°
5
70°
51°
6
68°
54°
7
74°
54°
8
73°
53°
9
70°
52°
10
68°
51°
11
71°
54°
12
73°
53°
13
72°
54°
14
80°
58°
15
67°
52°
16
72°
53°
17
72°
53°
18
71°
52°
19
73°
54°
20
73°
53°
21
69°
52°
22
71°
53°
23
70°
51°
24
61°
47°
25
64°
48°
26
70°
51°
27
70°
52°
28
68°
50°
29
60°
49°
30
59°
50°
31
60°
51°
1
65°
50°
2
67°
50°
3
64°
49°
4
66°
49°
5
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Slave Lake
Slave Lake's August 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 47° and 58°. The average high for August is 69° 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 August weather will actually feel in Slave Lake. See also: September | October | November.
