S
M
T
W
T
F
S
30
81°
56°
31
75°
68°
1
88°
68°
2
72°
68°
3
86°
66°
4
84°
70°
5
79°
63°
6
79°
59°
7
77°
54°
8
81°
54°
9
84°
61°
10
86°
68°
11
81°
59°
12
79°
54°
13
81°
64°
14
73°
52°
15
73°
46°
16
82°
66°
17
82°
67°
18
83°
56°
19
74°
60°
20
69°
61°
21
67°
59°
22
69°
55°
23
70°
57°
24
73°
54°
25
72°
52°
26
73°
51°
27
72°
50°
28
74°
50°
29
73°
48°
30
70°
47°
1
69°
52°
2
74°
52°
3
65°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Macungie
Macungie's September 2026 forecast shows daily high temperatures ranging from 65° to 83°, with overnight lows between 47° and 67°. The average high for September is 73° with an average low of 55°. 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.
