S
M
T
W
T
F
S
26
91°
71°
27
91°
71°
28
90°
72°
29
92°
71°
30
92°
71°
31
91°
70°
1
91°
72°
2
92°
71°
3
91°
70°
4
91°
70°
5
92°
72°
6
91°
72°
7
92°
70°
8
87°
68°
9
90°
69°
10
86°
64°
11
87°
68°
12
89°
70°
13
90°
69°
14
91°
70°
15
90°
69°
16
91°
70°
17
91°
63°
18
90°
61°
19
83°
60°
20
82°
60°
21
82°
61°
22
83°
61°
23
83°
62°
24
84°
61°
25
85°
61°
26
85°
62°
27
88°
60°
28
83°
59°
29
82°
60°
30
85°
60°
31
85°
62°
1
87°
60°
2
81°
59°
3
80°
65°
4
86°
64°
5
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Herculaneum
Herculaneum's August 2026 forecast shows daily high temperatures ranging from 80° to 92°, with overnight lows between 59° and 72°. The average high for August is 88° 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 August weather will actually feel in Herculaneum. See also: September | October | November.
