S
M
T
W
T
F
S
30
82°
61°
31
83°
62°
1
83°
62°
2
82°
61°
3
83°
62°
4
83°
62°
5
81°
61°
6
81°
61°
7
80°
60°
8
83°
62°
9
82°
61°
10
81°
60°
11
81°
60°
12
80°
59°
13
81°
61°
14
78°
60°
15
77°
59°
16
78°
56°
17
74°
56°
18
73°
54°
19
69°
52°
20
74°
55°
21
77°
51°
22
73°
47°
23
66°
46°
24
68°
51°
25
66°
53°
26
75°
54°
27
76°
51°
28
69°
52°
29
70°
53°
30
73°
44°
1
70°
42°
2
62°
41°
3
61°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Scranton
Scranton's September 2026 forecast shows daily high temperatures ranging from 61° to 83°, with overnight lows between 41° and 62°. The average high for September is 76° 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 Scranton. See also: October | November | December.