S
M
T
W
T
F
S
26
87°
68°
27
88°
74°
28
92°
76°
29
83°
64°
30
77°
61°
1
66°
53°
2
75°
50°
3
77°
58°
4
84°
68°
5
87°
71°
6
82°
63°
7
71°
55°
8
76°
60°
9
83°
67°
10
88°
66°
11
82°
62°
12
84°
62°
13
84°
66°
14
86°
67°
15
87°
66°
16
84°
65°
17
79°
67°
18
80°
68°
19
81°
67°
20
83°
69°
21
86°
67°
22
81°
62°
23
80°
63°
24
81°
66°
25
84°
64°
26
81°
63°
27
81°
63°
28
82°
66°
29
80°
68°
30
83°
68°
31
82°
69°
1
84°
70°
2
85°
69°
3
85°
72°
4
86°
73°
5
85°
70°
6
85°
71°
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 71° to 88°, with overnight lows between 55° and 73°. The average high for May is 83° with an average low of 66°. 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.