S
M
T
W
T
F
S
26
90°
74°
27
91°
74°
28
92°
73°
29
93°
74°
30
93°
74°
31
92°
73°
1
92°
74°
2
93°
74°
3
94°
73°
4
93°
73°
5
93°
74°
6
92°
74°
7
94°
73°
8
90°
72°
9
91°
72°
10
88°
67°
11
88°
70°
12
91°
72°
13
92°
71°
14
93°
72°
15
92°
71°
16
93°
73°
17
93°
68°
18
92°
65°
19
86°
64°
20
85°
64°
21
85°
65°
22
86°
65°
23
86°
66°
24
87°
65°
25
87°
64°
26
88°
64°
27
91°
65°
28
86°
63°
29
85°
63°
30
85°
64°
31
88°
63°
1
90°
65°
2
88°
63°
3
83°
69°
4
89°
68°
5
89°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Poplar Bluff
Poplar Bluff's August 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 63° and 74°. The average high for August is 90° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Poplar Bluff. See also: September | October | November.