S
M
T
W
T
F
S
30
79°
62°
31
83°
65°
1
83°
65°
2
81°
64°
3
76°
60°
4
76°
56°
5
74°
56°
6
74°
55°
7
77°
62°
8
81°
56°
9
74°
54°
10
73°
55°
11
76°
50°
12
71°
53°
13
71°
52°
14
70°
51°
15
72°
53°
16
73°
54°
17
72°
53°
18
74°
51°
19
73°
49°
20
70°
49°
21
69°
48°
22
69°
49°
23
71°
52°
24
74°
49°
25
75°
54°
26
75°
54°
27
68°
52°
28
70°
50°
29
73°
47°
30
72°
46°
1
66°
49°
2
70°
54°
3
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Upper Gwynedd Township
Upper Gwynedd Township's September 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 44° and 65°. The average high for September is 74° with an average low of 54°. 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 Upper Gwynedd Township. See also: October | November | December.
