S
M
T
W
T
F
S
30
78°
60°
31
82°
61°
1
79°
54°
2
78°
54°
3
78°
55°
4
77°
52°
5
77°
53°
6
78°
59°
7
82°
59°
8
77°
54°
9
78°
58°
10
81°
53°
11
78°
58°
12
82°
58°
13
81°
57°
14
83°
57°
15
82°
56°
16
82°
57°
17
77°
56°
18
80°
57°
19
81°
56°
20
79°
55°
21
80°
48°
22
78°
47°
23
77°
53°
24
71°
54°
25
Hist. Avg.
74°
52°
26
Hist. Avg.
73°
51°
27
Hist. Avg.
73°
51°
28
Hist. Avg.
72°
50°
29
Hist. Avg.
72°
50°
30
Hist. Avg.
72°
50°
1
Hist. Avg.
71°
49°
2
Hist. Avg.
71°
49°
3
Hist. Avg.
70°
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 71° to 83°, with overnight lows between 47° and 61°. The average high for September is 79° 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.
