S
M
T
W
T
F
S
30
81°
48°
31
87°
51°
1
74°
56°
2
63°
53°
3
68°
53°
4
68°
54°
5
71°
53°
6
69°
53°
7
77°
52°
8
83°
49°
9
93°
52°
10
89°
54°
11
79°
53°
12
69°
51°
13
68°
53°
14
74°
52°
15
71°
47°
16
78°
53°
17
81°
53°
18
76°
53°
19
78°
53°
20
81°
49°
21
78°
55°
22
73°
52°
23
76°
48°
24
80°
52°
25
65°
45°
26
68°
44°
27
71°
42°
28
72°
43°
29
75°
49°
30
76°
48°
1
76°
45°
2
74°
44°
3
74°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yoncalla
Yoncalla's September 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 42° and 52°. The average high for September is 73° with an average low of 46°. 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 Yoncalla. See also: October | November | December.
