S
M
T
W
T
F
S
30
96°
69°
31
96°
72°
1
95°
74°
2
99°
74°
3
96°
74°
4
95°
73°
5
95°
72°
6
95°
74°
7
98°
74°
8
92°
75°
9
95°
74°
10
97°
73°
11
95°
73°
12
95°
73°
13
94°
71°
14
93°
70°
15
88°
66°
16
85°
69°
17
87°
69°
18
88°
69°
19
89°
68°
20
90°
69°
21
90°
69°
22
89°
68°
23
90°
68°
24
89°
67°
25
88°
68°
26
84°
67°
27
81°
63°
28
80°
59°
29
79°
57°
30
79°
57°
1
82°
58°
2
82°
61°
3
78°
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 78° to 99°, with overnight lows between 57° and 75°. The average high for September is 89° with an average low of 68°. 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.
