S
M
T
W
T
F
S
30
76°
43°
31
84°
49°
1
68°
56°
2
63°
54°
3
60°
54°
4
64°
53°
5
70°
55°
6
67°
53°
7
73°
52°
8
82°
48°
9
89°
50°
10
84°
50°
11
71°
45°
12
64°
52°
13
65°
48°
14
71°
49°
15
70°
49°
16
81°
49°
17
84°
50°
18
74°
48°
19
79°
49°
20
80°
49°
21
76°
49°
22
76°
46°
23
74°
48°
24
76°
51°
25
77°
50°
26
71°
51°
27
76°
51°
28
73°
49°
29
72°
49°
30
71°
45°
1
67°
43°
2
66°
50°
3
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yamhill
Yamhill's September 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 43° and 51°. The average high for September is 74° with an average low of 48°. 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 Yamhill. See also: October | November | December.
