S
M
T
W
T
F
S
31
79°
46°
1
79°
52°
2
77°
52°
3
81°
59°
4
82°
59°
5
82°
64°
6
81°
64°
7
75°
54°
8
73°
48°
9
73°
46°
10
72°
57°
11
79°
57°
12
81°
52°
13
81°
59°
14
82°
59°
15
81°
59°
16
77°
59°
17
73°
61°
18
86°
61°
19
82°
55°
20
77°
55°
21
73°
54°
22
73°
54°
23
82°
63°
24
77°
63°
25
79°
64°
26
81°
63°
27
77°
59°
28
86°
63°
29
77°
59°
30
81°
59°
1
72°
52°
2
68°
46°
3
72°
43°
4
82°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Macungie
Macungie's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Macungie. See also: October | November | December.
