S
M
T
W
T
F
S
30
74°
45°
31
69°
44°
1
68°
48°
2
72°
51°
3
68°
47°
4
66°
51°
5
65°
49°
6
73°
45°
7
69°
45°
8
69°
44°
9
66°
42°
10
65°
47°
11
66°
40°
12
64°
41°
13
63°
40°
14
66°
48°
15
69°
41°
16
65°
37°
17
62°
37°
18
60°
38°
19
59°
38°
20
60°
39°
21
60°
40°
22
58°
40°
23
59°
43°
24
64°
43°
25
64°
42°
26
65°
45°
27
66°
38°
28
65°
33°
29
55°
34°
30
55°
43°
1
56°
44°
2
61°
44°
3
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Stewartstown
Stewartstown's September 2026 forecast shows daily high temperatures ranging from 55° to 74°, with overnight lows between 33° and 51°. The average high for September is 64° with an average low of 43°. 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 Stewartstown. See also: October | November | December.
