S
M
T
W
T
F
S
26
96°
74°
27
98°
72°
28
98°
76°
29
98°
76°
30
101°
77°
31
100°
76°
1
100°
74°
2
100°
77°
3
101°
73°
4
100°
76°
5
99°
76°
6
100°
77°
7
99°
76°
8
97°
72°
9
98°
74°
10
99°
74°
11
100°
76°
12
101°
77°
13
102°
76°
14
98°
77°
15
101°
78°
16
100°
71°
17
101°
75°
18
101°
73°
19
101°
73°
20
102°
73°
21
100°
74°
22
104°
74°
23
104°
74°
24
101°
75°
25
101°
73°
26
103°
75°
27
103°
76°
28
102°
75°
29
98°
74°
30
99°
76°
31
98°
75°
1
99°
76°
2
97°
75°
3
92°
71°
4
95°
75°
5
94°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Canyon Lake
Canyon Lake's August 2026 forecast shows daily high temperatures ranging from 92° to 104°, with overnight lows between 71° and 76°. The average high for August is 99° with an average low of 75°. 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 Canyon Lake. See also: September | October | November.