S
M
T
W
T
F
S
30
85°
67°
31
89°
68°
1
87°
69°
2
90°
68°
3
90°
69°
4
89°
67°
5
87°
68°
6
89°
68°
7
88°
67°
8
86°
67°
9
82°
66°
10
83°
67°
11
87°
66°
12
87°
66°
13
88°
65°
14
87°
66°
15
87°
66°
16
86°
64°
17
86°
57°
18
79°
59°
19
83°
55°
20
79°
55°
21
77°
54°
22
76°
57°
23
77°
59°
24
84°
60°
25
83°
61°
26
82°
59°
27
83°
60°
28
82°
58°
29
81°
57°
30
81°
56°
1
78°
54°
2
80°
56°
3
75°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Poplar Bluff
Poplar Bluff's September 2026 forecast shows daily high temperatures ranging from 75° to 90°, with overnight lows between 50° and 69°. The average high for September is 84° with an average low of 62°. 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 Bluff. See also: October | November | December.
