S
M
T
W
T
F
S
31
104°
69°
1
103°
67°
2
103°
71°
3
98°
67°
4
100°
72°
5
96°
63°
6
96°
62°
7
92°
58°
8
92°
59°
9
87°
58°
10
84°
60°
11
84°
57°
12
87°
59°
13
91°
61°
14
92°
59°
15
95°
60°
16
101°
62°
17
99°
63°
18
87°
67°
19
84°
67°
20
89°
68°
21
91°
65°
22
93°
64°
23
98°
65°
24
90°
68°
25
90°
62°
26
90°
63°
27
93°
63°
28
86°
63°
29
84°
60°
30
84°
64°
1
84°
58°
2
87°
59°
3
76°
54°
4
78°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Plainview
Plainview's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.