S
M
T
W
T
F
S
26
68°
51°
27
66°
47°
28
60°
41°
29
62°
39°
30
66°
38°
1
67°
32°
2
67°
30°
3
81°
47°
4
85°
45°
5
60°
47°
6
61°
43°
7
76°
36°
8
73°
46°
9
83°
42°
10
72°
45°
11
82°
39°
12
87°
54°
13
87°
58°
14
85°
61°
15
92°
64°
16
89°
67°
17
89°
70°
18
80°
49°
19
72°
53°
20
74°
50°
21
73°
54°
22
83°
61°
23
80°
57°
24
84°
59°
25
85°
64°
26
89°
63°
27
84°
62°
28
85°
61°
29
82°
59°
30
82°
62°
31
79°
62°
1
77°
58°
2
76°
63°
3
82°
65°
4
87°
66°
5
87°
66°
6
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Eureka Lake
Eureka Lake's May 2026 forecast shows daily high temperatures ranging from 72° to 92°, with overnight lows between 49° and 70°. The average high for May is 83° with an average low of 61°. 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 Eureka Lake. See also: June | July | August.