S
M
T
W
T
F
S
26
84°
72°
27
88°
70°
28
93°
70°
29
90°
68°
30
86°
61°
31
88°
61°
1
88°
70°
2
81°
70°
3
88°
72°
4
84°
70°
5
88°
70°
6
90°
70°
7
90°
68°
8
91°
71°
9
93°
71°
10
93°
72°
11
96°
71°
12
94°
70°
13
94°
72°
14
93°
72°
15
93°
71°
16
92°
70°
17
88°
66°
18
88°
68°
19
87°
66°
20
88°
68°
21
87°
67°
22
91°
70°
23
91°
69°
24
86°
65°
25
89°
68°
26
91°
69°
27
91°
69°
28
90°
70°
29
91°
69°
30
88°
68°
31
83°
68°
1
83°
67°
2
85°
68°
3
87°
68°
4
89°
67°
5
88°
67°
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 83° to 96°, with overnight lows between 65° and 72°. The average high for August is 90° with an average low of 69°. 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.
