S
M
T
W
T
F
S
30
100°
68°
31
96°
64°
1
96°
68°
2
97°
69°
3
98°
69°
4
96°
68°
5
98°
67°
6
99°
69°
7
97°
71°
8
96°
68°
9
95°
67°
10
92°
66°
11
88°
60°
12
91°
61°
13
90°
62°
14
84°
60°
15
89°
65°
16
88°
64°
17
89°
66°
18
89°
65°
19
88°
65°
20
88°
64°
21
87°
64°
22
86°
63°
23
85°
62°
24
83°
62°
25
82°
61°
26
83°
60°
27
84°
61°
28
84°
61°
29
83°
60°
30
84°
60°
1
83°
59°
2
83°
59°
3
82°
58°
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 82° to 99°, with overnight lows between 58° and 71°. The average high for September is 89° with an average low of 64°. 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.
