S
M
T
W
T
F
S
26
87°
66°
27
84°
67°
28
86°
67°
29
89°
66°
30
90°
67°
31
89°
67°
1
89°
66°
2
88°
67°
3
88°
63°
4
86°
59°
5
83°
60°
6
82°
59°
7
83°
60°
8
85°
65°
9
88°
66°
10
87°
64°
11
87°
66°
12
84°
64°
13
87°
65°
14
Hist. Avg.
81°
60°
15
Hist. Avg.
81°
60°
16
Hist. Avg.
81°
60°
17
Hist. Avg.
81°
60°
18
Hist. Avg.
80°
59°
19
Hist. Avg.
80°
59°
20
Hist. Avg.
80°
59°
21
Hist. Avg.
80°
59°
22
Hist. Avg.
79°
59°
23
Hist. Avg.
79°
58°
24
Hist. Avg.
79°
58°
25
Hist. Avg.
79°
58°
26
Hist. Avg.
78°
58°
27
Hist. Avg.
78°
57°
28
Hist. Avg.
78°
57°
29
Hist. Avg.
78°
57°
30
Hist. Avg.
77°
57°
31
Hist. Avg.
77°
56°
1
Hist. Avg.
77°
56°
2
Hist. Avg.
77°
56°
3
Hist. Avg.
76°
55°
4
Hist. Avg.
76°
55°
5
Hist. Avg.
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Harleysville
Harleysville's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 59° and 67°. The average high for August is 86° with an average low of 64°. 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 Harleysville. See also: September | October | November.
