S
M
T
W
T
F
S
30
80°
59°
31
81°
60°
1
83°
59°
2
84°
62°
3
84°
61°
4
82°
63°
5
82°
63°
6
79°
58°
7
82°
57°
8
82°
59°
9
83°
60°
10
84°
61°
11
84°
61°
12
83°
60°
13
83°
59°
14
81°
58°
15
82°
59°
16
83°
60°
17
Hist. Avg.
79°
55°
18
Hist. Avg.
79°
54°
19
Hist. Avg.
79°
54°
20
Hist. Avg.
78°
54°
21
Hist. Avg.
78°
53°
22
Hist. Avg.
78°
53°
23
Hist. Avg.
78°
52°
24
Hist. Avg.
77°
52°
25
Hist. Avg.
77°
52°
26
Hist. Avg.
77°
51°
27
Hist. Avg.
76°
51°
28
Hist. Avg.
76°
50°
29
Hist. Avg.
76°
50°
30
Hist. Avg.
76°
50°
1
Hist. Avg.
75°
49°
2
Hist. Avg.
75°
49°
3
Hist. Avg.
74°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Yonah
Yonah's September 2026 forecast shows daily high temperatures ranging from 79° to 84°, with overnight lows between 57° and 63°. The average high for September is 82° with an average low of 60°. 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 Yonah. See also: October | November | December.