S
M
T
W
T
F
S
30
93°
71°
31
92°
70°
1
92°
70°
2
91°
71°
3
91°
70°
4
90°
71°
5
91°
70°
6
91°
70°
7
90°
71°
8
91°
70°
9
91°
70°
10
90°
69°
11
91°
69°
12
90°
68°
13
90°
69°
14
89°
69°
15
90°
68°
16
90°
69°
17
89°
68°
18
88°
68°
19
88°
66°
20
85°
67°
21
85°
67°
22
87°
66°
23
89°
67°
24
89°
62°
25
86°
66°
26
84°
65°
27
86°
65°
28
88°
64°
29
86°
65°
30
83°
65°
1
82°
59°
2
82°
58°
3
81°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Columbia
Columbia's September 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 57° and 71°. The average high for September is 88° with an average low of 67°. 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 Columbia. See also: October | November | December.
