S
M
T
W
T
F
S
30
77°
52°
31
75°
50°
1
72°
57°
2
72°
50°
3
73°
47°
4
70°
56°
5
72°
59°
6
79°
55°
7
78°
52°
8
76°
48°
9
69°
50°
10
70°
54°
11
70°
52°
12
67°
54°
13
74°
54°
14
78°
48°
15
Hist. Avg.
72°
51°
16
Hist. Avg.
71°
50°
17
Hist. Avg.
71°
50°
18
Hist. Avg.
71°
49°
19
Hist. Avg.
70°
49°
20
Hist. Avg.
70°
48°
21
Hist. Avg.
69°
48°
22
Hist. Avg.
69°
48°
23
Hist. Avg.
68°
47°
24
Hist. Avg.
68°
46°
25
Hist. Avg.
68°
46°
26
Hist. Avg.
67°
46°
27
Hist. Avg.
67°
45°
28
Hist. Avg.
66°
45°
29
Hist. Avg.
66°
44°
30
Hist. Avg.
66°
44°
1
Hist. Avg.
65°
44°
2
Hist. Avg.
65°
43°
3
Hist. Avg.
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Plainview
Plainview's September 2026 forecast shows daily high temperatures ranging from 67° to 79°, with overnight lows between 47° and 59°. The average high for September is 73° with an average low of 52°. 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.