S
M
T
W
T
F
S
30
89°
69°
31
90°
70°
1
93°
66°
2
94°
66°
3
99°
70°
4
99°
72°
5
94°
69°
6
88°
64°
7
88°
69°
8
87°
63°
9
89°
66°
10
90°
61°
11
87°
58°
12
84°
59°
13
85°
60°
14
85°
61°
15
81°
58°
16
82°
54°
17
78°
58°
18
74°
58°
19
75°
59°
20
75°
58°
21
76°
58°
22
80°
57°
23
78°
56°
24
74°
56°
25
80°
55°
26
77°
54°
27
74°
47°
28
70°
45°
29
69°
44°
30
71°
45°
1
70°
46°
2
71°
52°
3
72°
53°
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 69° to 99°, with overnight lows between 44° and 72°. The average high for September is 81° with an average low of 58°. 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.
