S
M
T
W
T
F
S
26
92°
72°
27
91°
73°
28
90°
72°
29
90°
73°
30
91°
74°
31
91°
73°
1
92°
72°
2
92°
70°
3
91°
69°
4
91°
70°
5
90°
68°
6
86°
70°
7
90°
72°
8
88°
72°
9
89°
71°
10
90°
70°
11
90°
70°
12
91°
71°
13
92°
70°
14
92°
71°
15
91°
69°
16
90°
70°
17
91°
69°
18
88°
69°
19
90°
72°
20
88°
69°
21
Hist. Avg.
89°
68°
22
Hist. Avg.
89°
67°
23
Hist. Avg.
88°
67°
24
Hist. Avg.
88°
67°
25
Hist. Avg.
88°
67°
26
Hist. Avg.
88°
66°
27
Hist. Avg.
88°
66°
28
Hist. Avg.
88°
66°
29
Hist. Avg.
87°
66°
30
Hist. Avg.
87°
66°
31
Hist. Avg.
87°
65°
1
Hist. Avg.
87°
65°
2
Hist. Avg.
87°
65°
3
Hist. Avg.
86°
64°
4
Hist. Avg.
86°
64°
5
Hist. Avg.
86°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Harrisburg
Harrisburg's August 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 68° and 74°. The average high for August is 90° with an average low of 71°. 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.
