S
M
T
W
T
F
S
30
95°
61°
31
97°
67°
1
100°
70°
2
100°
72°
3
99°
72°
4
101°
73°
5
103°
73°
6
98°
74°
7
92°
65°
8
96°
62°
9
102°
70°
10
93°
74°
11
81°
69°
12
94°
66°
13
95°
70°
14
94°
68°
15
98°
70°
16
98°
73°
17
99°
69°
18
99°
70°
19
100°
67°
20
99°
66°
21
93°
70°
22
81°
60°
23
N/A
24
74°
60°
25
N/A
26
82°
60°
27
79°
61°
28
83°
56°
29
88°
52°
30
93°
60°
1
92°
65°
2
72°
63°
3
75°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Poplar Bluff
Poplar Bluff's September 2026 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 Poplar Bluff. See also: October | November | December.