S
M
T
W
T
F
S
30
80°
58°
31
83°
60°
1
83°
59°
2
82°
59°
3
83°
52°
4
76°
49°
5
75°
52°
6
76°
57°
7
81°
58°
8
81°
57°
9
76°
55°
10
75°
56°
11
80°
55°
12
79°
57°
13
80°
56°
14
79°
56°
15
80°
55°
16
79°
55°
17
75°
54°
18
78°
48°
19
71°
46°
20
71°
45°
21
68°
44°
22
69°
48°
23
71°
47°
24
70°
44°
25
68°
44°
26
68°
48°
27
71°
49°
28
74°
50°
29
73°
51°
30
74°
50°
1
69°
49°
2
72°
48°
3
66°
48°
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 66° to 83°, with overnight lows between 44° and 60°. The average high for September is 75° with an average low of 52°. 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.
