S
M
T
W
T
F
S
30
88°
49°
31
87°
47°
1
84°
49°
2
84°
49°
3
86°
50°
4
84°
46°
5
81°
45°
6
83°
48°
7
87°
48°
8
85°
44°
9
82°
39°
10
73°
37°
11
73°
39°
12
74°
37°
13
72°
37°
14
69°
38°
15
70°
36°
16
71°
37°
17
73°
38°
18
74°
41°
19
71°
39°
20
72°
38°
21
71°
37°
22
68°
37°
23
69°
39°
24
77°
39°
25
Hist. Avg.
69°
39°
26
Hist. Avg.
68°
38°
27
Hist. Avg.
68°
38°
28
Hist. Avg.
67°
38°
29
Hist. Avg.
67°
37°
30
Hist. Avg.
66°
37°
1
Hist. Avg.
66°
36°
2
Hist. Avg.
65°
36°
3
Hist. Avg.
65°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Plains
Plains's September 2026 forecast shows daily high temperatures ranging from 68° to 88°, with overnight lows between 36° and 50°. The average high for September is 77° with an average low of 42°. 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 Plains. See also: October | November | December.
