S
M
T
W
T
F
S
26
93°
72°
27
93°
72°
28
94°
71°
29
94°
72°
30
93°
72°
31
93°
71°
1
92°
73°
2
95°
72°
3
92°
71°
4
92°
72°
5
94°
72°
6
94°
71°
7
92°
71°
8
91°
70°
9
92°
69°
10
87°
68°
11
88°
70°
12
90°
69°
13
91°
70°
14
92°
71°
15
91°
70°
16
92°
70°
17
92°
62°
18
88°
60°
19
82°
59°
20
81°
59°
21
82°
60°
22
82°
60°
23
83°
63°
24
82°
60°
25
83°
62°
26
86°
65°
27
87°
58°
28
82°
58°
29
82°
61°
30
85°
63°
31
87°
62°
1
88°
58°
2
81°
58°
3
80°
65°
4
84°
66°
5
81°
60°
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 80° to 95°, with overnight lows between 58° and 73°. 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 Harrisburg. See also: September | October | November.
