S
M
T
W
T
F
S
30
95°
64°
31
87°
66°
1
91°
67°
2
88°
68°
3
92°
68°
4
93°
67°
5
92°
68°
6
91°
67°
7
89°
66°
8
88°
65°
9
89°
64°
10
87°
63°
11
89°
65°
12
89°
65°
13
91°
64°
14
82°
57°
15
81°
57°
16
Hist. Avg.
86°
62°
17
Hist. Avg.
85°
61°
18
Hist. Avg.
85°
61°
19
Hist. Avg.
85°
60°
20
Hist. Avg.
84°
60°
21
Hist. Avg.
84°
60°
22
Hist. Avg.
84°
59°
23
Hist. Avg.
83°
59°
24
Hist. Avg.
83°
58°
25
Hist. Avg.
82°
58°
26
Hist. Avg.
82°
58°
27
Hist. Avg.
82°
57°
28
Hist. Avg.
81°
57°
29
Hist. Avg.
81°
56°
30
Hist. Avg.
81°
56°
1
Hist. Avg.
80°
56°
2
Hist. Avg.
80°
55°
3
Hist. Avg.
80°
55°
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 81° to 95°, with overnight lows between 57° and 68°. The average high for September is 89° with an average low of 65°. 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.