S
M
T
W
T
F
S
26
62°
52°
27
67°
48°
28
70°
47°
29
76°
50°
30
71°
53°
1
69°
55°
2
66°
53°
3
66°
52°
4
68°
55°
5
69°
53°
6
72°
53°
7
71°
52°
8
69°
55°
9
74°
54°
10
73°
52°
11
75°
52°
12
78°
53°
13
70°
50°
14
67°
49°
15
67°
51°
16
66°
50°
17
67°
48°
18
66°
51°
19
66°
47°
20
69°
50°
21
71°
52°
22
74°
53°
23
75°
56°
24
76°
55°
25
75°
54°
26
73°
53°
27
70°
52°
28
68°
51°
29
68°
50°
30
67°
51°
31
68°
51°
1
68°
50°
2
69°
51°
3
71°
53°
4
74°
55°
5
72°
52°
6
71°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hercules
Hercules's May 2026 forecast shows daily high temperatures ranging from 66° to 78°, with overnight lows between 47° and 56°. The average high for May is 70° with an average low of 52°. 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 Hercules. See also: June | July | August.
