S
M
T
W
T
F
S
26
79°
65°
27
84°
63°
28
83°
66°
29
80°
60°
30
85°
57°
31
86°
60°
1
78°
69°
2
80°
68°
3
82°
62°
4
86°
54°
5
88°
64°
6
87°
64°
7
85°
69°
8
87°
67°
9
88°
72°
10
84°
68°
11
81°
70°
12
84°
67°
13
82°
65°
14
78°
60°
15
79°
64°
16
78°
61°
17
77°
62°
18
79°
59°
19
82°
61°
20
80°
60°
21
78°
61°
22
80°
60°
23
86°
65°
24
77°
56°
25
77°
57°
26
79°
60°
27
82°
63°
28
84°
62°
29
78°
58°
30
76°
56°
31
76°
60°
1
77°
62°
2
78°
62°
3
83°
63°
4
81°
62°
5
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Harrisburg
Harrisburg's August 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 56° and 72°. The average high for August is 80° with an average low of 62°. 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 Harrisburg. See also: September | October | November.
