S
M
T
W
T
F
S
30
89°
73°
31
94°
73°
1
98°
73°
2
98°
73°
3
97°
73°
4
96°
75°
5
98°
73°
6
94°
69°
7
91°
69°
8
91°
70°
9
94°
67°
10
95°
70°
11
97°
68°
12
93°
67°
13
91°
67°
14
92°
66°
15
91°
70°
16
91°
70°
17
87°
69°
18
88°
69°
19
86°
67°
20
84°
66°
21
85°
67°
22
86°
67°
23
86°
66°
24
89°
68°
25
89°
67°
26
83°
66°
27
82°
67°
28
81°
67°
29
82°
66°
30
82°
65°
1
80°
65°
2
80°
64°
3
81°
64°
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 80° to 98°, with overnight lows between 64° 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.
