S
M
T
W
T
F
S
30
81°
61°
31
81°
60°
1
80°
59°
2
80°
60°
3
81°
61°
4
81°
60°
5
80°
59°
6
80°
60°
7
81°
59°
8
78°
57°
9
78°
57°
10
77°
56°
11
80°
57°
12
74°
56°
13
70°
49°
14
65°
45°
15
66°
54°
16
66°
50°
17
67°
49°
18
77°
46°
19
78°
41°
20
75°
40°
21
63°
41°
22
64°
40°
23
65°
49°
24
68°
51°
25
70°
52°
26
69°
54°
27
72°
52°
28
73°
49°
29
71°
41°
30
63°
36°
1
66°
34°
2
56°
36°
3
59°
45°
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 56° to 81°, with overnight lows between 34° and 61°. The average high for September is 72° with an average low of 51°. 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.
