S
M
T
W
T
F
S
30
83°
64°
31
84°
57°
1
86°
55°
2
78°
56°
3
77°
62°
4
80°
63°
5
84°
55°
6
85°
54°
7
77°
54°
8
77°
62°
9
79°
60°
10
82°
60°
11
76°
58°
12
75°
55°
13
75°
51°
14
74°
51°
15
74°
55°
16
75°
58°
17
75°
58°
18
81°
59°
19
82°
59°
20
79°
57°
21
81°
56°
22
77°
54°
23
77°
50°
24
75°
49°
25
70°
49°
26
72°
49°
27
79°
55°
28
72°
56°
29
79°
51°
30
Hist. Avg.
73°
49°
1
Hist. Avg.
73°
48°
2
Hist. Avg.
72°
48°
3
Hist. Avg.
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Youngstown
Youngstown's September 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 49° and 64°. The average high for September is 78° with an average low of 56°. 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.
