S
M
T
W
T
F
S
26
83°
64°
27
83°
61°
28
83°
59°
29
82°
64°
30
84°
65°
31
88°
63°
1
85°
59°
2
83°
59°
3
82°
61°
4
82°
59°
5
83°
58°
6
82°
58°
7
82°
59°
8
83°
60°
9
82°
64°
10
82°
65°
11
83°
65°
12
82°
63°
13
84°
64°
14
87°
58°
15
84°
58°
16
82°
60°
17
84°
60°
18
86°
58°
19
81°
57°
20
80°
56°
21
81°
61°
22
81°
57°
23
80°
62°
24
80°
62°
25
81°
61°
26
84°
64°
27
85°
63°
28
85°
64°
29
86°
62°
30
86°
56°
31
79°
56°
1
79°
55°
2
78°
56°
3
79°
61°
4
78°
55°
5
82°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Macungie
Macungie's August 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 55° and 65°. The average high for August is 83° with an average low of 60°. 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 Macungie. See also: September | October | November.