S
M
T
W
T
F
S
30
71°
67°
31
74°
67°
1
79°
71°
2
82°
69°
3
80°
68°
4
76°
67°
5
76°
67°
6
70°
61°
7
74°
58°
8
75°
68°
9
80°
65°
10
74°
56°
11
72°
59°
12
81°
65°
13
79°
61°
14
73°
60°
15
75°
61°
16
73°
57°
17
75°
58°
18
74°
57°
19
71°
56°
20
70°
52°
21
67°
58°
22
67°
58°
23
68°
57°
24
72°
58°
25
75°
57°
26
75°
56°
27
68°
56°
28
74°
57°
29
75°
58°
30
75°
58°
1
74°
57°
2
72°
54°
3
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Youngstown
Youngstown's September 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 50° and 68°. The average high for September is 73° with an average low of 58°. 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 Youngstown. See also: October | November | December.
