S
M
T
W
T
F
S
30
80°
62°
31
86°
59°
1
83°
49°
2
84°
55°
3
88°
59°
4
70°
59°
5
73°
61°
6
84°
57°
7
81°
59°
8
76°
56°
9
75°
46°
10
76°
58°
11
80°
54°
12
73°
44°
13
63°
50°
14
59°
48°
15
65°
44°
16
66°
47°
17
63°
43°
18
63°
44°
19
64°
42°
20
61°
42°
21
65°
44°
22
65°
51°
23
68°
51°
24
69°
50°
25
65°
49°
26
63°
49°
27
67°
51°
28
66°
50°
29
65°
48°
30
60°
48°
1
56°
43°
2
54°
39°
3
53°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Poplar
Poplar's September 2026 forecast shows daily high temperatures ranging from 53° to 80°, with overnight lows between 37° and 58°. The average high for September is 65° with an average low of 47°. 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 Poplar. See also: October | November | December.