S
M
T
W
T
F
S
26
90°
74°
27
94°
70°
28
90°
69°
29
91°
70°
30
95°
72°
31
96°
73°
1
95°
72°
2
96°
74°
3
96°
72°
4
95°
71°
5
91°
70°
6
90°
70°
7
90°
71°
8
91°
70°
9
92°
73°
10
95°
74°
11
94°
74°
12
95°
75°
13
95°
75°
14
96°
72°
15
96°
71°
16
95°
72°
17
95°
70°
18
93°
71°
19
94°
72°
20
94°
68°
21
89°
71°
22
94°
73°
23
92°
73°
24
93°
72°
25
94°
72°
26
94°
71°
27
93°
72°
28
94°
72°
29
94°
71°
30
93°
71°
31
94°
70°
1
94°
71°
2
93°
71°
3
94°
70°
4
92°
70°
5
92°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Columbia
Columbia's August 2026 forecast shows daily high temperatures ranging from 89° to 96°, with overnight lows between 68° and 75°. The average high for August is 93° with an average low of 72°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Columbia. See also: September | October | November.