S
M
T
W
T
F
S
26
50°
36°
27
57°
39°
28
64°
36°
29
61°
36°
30
52°
36°
1
64°
28°
2
73°
28°
3
75°
39°
4
77°
39°
5
46°
32°
6
48°
32°
7
72°
32°
8
72°
46°
9
77°
45°
10
68°
46°
11
86°
46°
12
77°
52°
13
90°
46°
14
88°
55°
15
86°
48°
16
81°
54°
17
73°
48°
18
46°
37°
19
57°
34°
20
63°
43°
21
73°
37°
22
70°
37°
23
77°
46°
24
87°
51°
25
87°
56°
26
81°
53°
27
73°
50°
28
82°
50°
29
75°
51°
30
74°
50°
31
72°
49°
1
79°
51°
2
79°
53°
3
78°
51°
4
83°
54°
5
80°
51°
6
79°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Jackson Lake
Jackson Lake's May 2026 forecast shows daily high temperatures ranging from 72° to 87°, with overnight lows between 46° and 56°. The average high for May is 79° with an average low of 51°. 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 Jackson Lake. See also: June | July | August.