S
M
T
W
T
F
S
30
83°
63°
31
83°
65°
1
84°
68°
2
81°
67°
3
81°
62°
4
76°
58°
5
77°
58°
6
78°
61°
7
79°
61°
8
78°
60°
9
79°
56°
10
76°
58°
11
72°
52°
12
72°
53°
13
74°
54°
14
76°
55°
15
78°
58°
16
78°
58°
17
77°
57°
18
79°
59°
19
78°
59°
20
77°
58°
21
77°
57°
22
76°
58°
23
78°
57°
24
77°
55°
25
70°
51°
26
69°
50°
27
70°
50°
28
73°
52°
29
74°
54°
30
74°
53°
1
73°
53°
2
74°
52°
3
74°
54°
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 69° to 84°, with overnight lows between 50° and 68°. The average high for September is 76° with an average low of 57°. 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.