S
M
T
W
T
F
S
26
64°
52°
27
67°
51°
28
77°
44°
29
79°
45°
30
80°
50°
1
82°
54°
2
85°
54°
3
70°
58°
4
67°
53°
5
66°
53°
6
80°
45°
7
88°
51°
8
90°
56°
9
91°
54°
10
92°
55°
11
99°
55°
12
80°
58°
13
81°
59°
14
82°
54°
15
79°
56°
16
77°
59°
17
70°
59°
18
80°
46°
19
89°
48°
20
89°
52°
21
88°
52°
22
86°
55°
23
83°
54°
24
84°
56°
25
83°
55°
26
82°
54°
27
82°
53°
28
83°
56°
29
85°
56°
30
86°
55°
31
84°
56°
1
88°
59°
2
89°
60°
3
89°
60°
4
90°
59°
5
90°
60°
6
89°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Canyon Lake
Canyon Lake's May 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 46° and 60°. The average high for May is 86° with an average low of 55°. 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 Canyon Lake. See also: June | July | August.