S
M
T
W
T
F
S
30
77°
61°
31
76°
59°
1
86°
61°
2
85°
64°
3
87°
59°
4
87°
51°
5
78°
52°
6
77°
54°
7
79°
58°
8
83°
56°
9
76°
48°
10
74°
47°
11
72°
47°
12
72°
48°
13
71°
55°
14
72°
45°
15
73°
43°
16
69°
43°
17
70°
45°
18
69°
44°
19
67°
43°
20
68°
44°
21
69°
45°
22
71°
47°
23
75°
52°
24
78°
53°
25
77°
51°
26
77°
42°
27
68°
51°
28
68°
42°
29
71°
43°
30
67°
48°
1
68°
42°
2
71°
46°
3
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Plainview
Plainview's September 2026 forecast shows daily high temperatures ranging from 66° to 87°, with overnight lows between 42° and 64°. The average high for September is 74° 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 Plainview. See also: October | November | December.
