S
M
T
W
T
F
S
30
76°
43°
31
84°
49°
1
71°
57°
2
64°
52°
3
66°
50°
4
69°
49°
5
74°
52°
6
78°
52°
7
73°
51°
8
75°
52°
9
78°
55°
10
79°
54°
11
79°
53°
12
77°
53°
13
76°
52°
14
78°
50°
15
73°
52°
16
72°
52°
17
71°
48°
18
71°
47°
19
72°
53°
20
70°
50°
21
70°
46°
22
71°
46°
23
69°
45°
24
68°
45°
25
67°
47°
26
69°
46°
27
72°
53°
28
67°
52°
29
68°
48°
30
69°
51°
1
67°
50°
2
66°
44°
3
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in McMinnville
McMinnville's September 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 44° and 57°. The average high for September is 71° with an average low of 50°. 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 McMinnville. See also: October | November | December.