S
M
T
W
T
F
S
30
81°
62°
31
84°
63°
1
86°
63°
2
84°
62°
3
86°
56°
4
83°
55°
5
79°
58°
6
81°
62°
7
85°
61°
8
81°
58°
9
78°
59°
10
81°
60°
11
85°
61°
12
85°
60°
13
84°
60°
14
85°
59°
15
84°
59°
16
83°
58°
17
82°
52°
18
76°
50°
19
75°
48°
20
75°
48°
21
73°
49°
22
74°
49°
23
75°
48°
24
79°
50°
25
79°
55°
26
80°
54°
27
81°
55°
28
80°
53°
29
79°
52°
30
79°
51°
1
75°
50°
2
78°
51°
3
72°
44°
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 72° to 86°, with overnight lows between 44° and 63°. The average high for September is 80° 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 Youngstown. See also: October | November | December.
