S
M
T
W
T
F
S
31
80°
65°
1
82°
63°
2
80°
53°
3
82°
59°
4
86°
62°
5
87°
69°
6
86°
69°
7
84°
70°
8
85°
66°
9
86°
65°
10
85°
67°
11
87°
67°
12
85°
64°
13
84°
65°
14
86°
62°
15
87°
66°
16
84°
63°
17
80°
64°
18
80°
66°
19
81°
67°
20
81°
67°
21
82°
66°
22
84°
67°
23
82°
64°
24
84°
67°
25
85°
68°
26
87°
69°
27
87°
68°
28
84°
69°
29
83°
68°
30
84°
67°
1
81°
66°
2
83°
69°
3
87°
69°
4
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Herculaneum
Herculaneum's June 2026 forecast shows daily high temperatures ranging from 80° to 87°, with overnight lows between 53° and 70°. The average high for June is 84° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Herculaneum. See also: July | August | September.