S
M
T
W
T
F
S
30
67°
49°
31
67°
50°
1
69°
53°
2
69°
58°
3
70°
58°
4
78°
57°
5
78°
53°
6
72°
48°
7
67°
47°
8
68°
50°
9
70°
46°
10
68°
49°
11
68°
47°
12
66°
47°
13
69°
54°
14
74°
53°
15
70°
52°
16
65°
51°
17
64°
52°
18
65°
50°
19
68°
44°
20
63°
48°
21
67°
43°
22
64°
42°
23
62°
41°
24
62°
42°
25
63°
45°
26
63°
41°
27
60°
48°
28
62°
45°
29
60°
40°
30
59°
42°
1
59°
45°
2
67°
42°
3
60°
38°
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 59° to 78°, with overnight lows between 38° and 58°. The average high for September is 66° with an average low of 48°. 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.
