S
M
T
W
T
F
S
30
89°
69°
31
90°
70°
1
97°
69°
2
96°
70°
3
96°
71°
4
95°
69°
5
91°
66°
6
86°
60°
7
88°
63°
8
87°
65°
9
89°
66°
10
90°
63°
11
81°
55°
12
81°
56°
13
80°
56°
14
83°
55°
15
81°
59°
16
76°
59°
17
78°
58°
18
81°
58°
19
83°
59°
20
83°
58°
21
82°
58°
22
82°
57°
23
81°
56°
24
83°
57°
25
83°
57°
26
82°
56°
27
81°
57°
28
81°
56°
29
80°
55°
30
81°
55°
1
80°
54°
2
80°
54°
3
79°
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 76° to 97°, with overnight lows between 53° and 71°. The average high for September is 84° 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 Columbia. See also: October | November | December.
