S
M
T
W
T
F
S
26
53°
29°
27
62°
25°
28
59°
43°
29
64°
38°
30
69°
39°
1
65°
43°
2
71°
38°
3
72°
43°
4
72°
45°
5
76°
43°
6
73°
48°
7
70°
44°
8
64°
43°
9
70°
38°
10
60°
40°
11
61°
35°
12
73°
43°
13
65°
49°
14
53°
40°
15
48°
36°
16
45°
33°
17
60°
30°
18
59°
40°
19
61°
41°
20
63°
35°
21
60°
42°
22
66°
46°
23
N/A
24
67°
49°
25
65°
43°
26
62°
42°
27
75°
45°
28
79°
50°
29
68°
43°
30
61°
44°
31
63°
42°
1
64°
43°
2
68°
48°
3
70°
48°
4
71°
49°
5
71°
48°
6
70°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Williams Lake
Williams Lake's May 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 42° and 50°. The average high for May is 68° with an average low of 46°. 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 Williams Lake. See also: June | July | August.
