S
M
T
W
T
F
S
26
66°
32°
27
58°
38°
28
56°
45°
29
66°
37°
30
73°
39°
1
70°
44°
2
73°
47°
3
78°
45°
4
80°
48°
5
65°
48°
6
61°
48°
7
63°
48°
8
61°
45°
9
68°
50°
10
69°
47°
11
70°
42°
12
84°
43°
13
60°
51°
14
59°
48°
15
52°
46°
16
58°
42°
17
65°
44°
18
66°
41°
19
65°
47°
20
67°
44°
21
73°
41°
22
74°
46°
23
65°
46°
24
72°
48°
25
64°
49°
26
64°
46°
27
72°
48°
28
75°
51°
29
61°
44°
30
63°
45°
31
64°
45°
1
72°
53°
2
77°
56°
3
74°
54°
4
71°
55°
5
72°
53°
6
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in John Sam Lake
John Sam Lake's May 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 44° and 56°. The average high for May is 69° with an average low of 50°. 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 John Sam Lake. See also: June | July | August.
