S
M
T
W
T
F
S
30
89°
73°
31
93°
72°
1
95°
71°
2
95°
73°
3
95°
73°
4
97°
73°
5
97°
73°
6
97°
70°
7
88°
70°
8
90°
68°
9
91°
70°
10
91°
73°
11
93°
73°
12
91°
72°
13
93°
73°
14
95°
72°
15
90°
72°
16
88°
66°
17
90°
63°
18
88°
66°
19
93°
72°
20
90°
72°
21
91°
70°
22
91°
70°
23
73°
64°
24
68°
61°
25
78°
49°
26
82°
52°
27
85°
54°
28
86°
58°
29
88°
61°
30
88°
64°
1
87°
65°
2
87°
65°
3
88°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blackville
Blackville's September 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 49° and 66°. The average high for September is 85° with an average low of 59°. 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 Blackville. See also: October | November | December.