S
M
T
W
T
F
S
30
85°
70°
31
86°
70°
1
85°
69°
2
84°
68°
3
80°
66°
4
80°
66°
5
80°
64°
6
79°
63°
7
82°
68°
8
81°
67°
9
80°
68°
10
83°
68°
11
85°
69°
12
84°
68°
13
85°
68°
14
84°
67°
15
84°
63°
16
83°
61°
17
79°
62°
18
78°
59°
19
77°
60°
20
77°
60°
21
78°
63°
22
80°
64°
23
81°
60°
24
81°
60°
25
78°
61°
26
77°
59°
27
77°
60°
28
79°
61°
29
80°
60°
30
80°
61°
1
76°
62°
2
79°
61°
3
80°
60°
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 86°, with overnight lows between 59° and 70°. The average high for September is 81° with an average low of 64°. 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.
