S
M
T
W
T
F
S
26
90°
72°
27
92°
71°
28
90°
69°
29
90°
70°
30
93°
72°
31
94°
73°
1
93°
72°
2
95°
74°
3
94°
74°
4
92°
72°
5
91°
71°
6
90°
73°
7
90°
73°
8
91°
72°
9
90°
73°
10
90°
74°
11
91°
74°
12
90°
75°
13
91°
75°
14
94°
74°
15
94°
72°
16
95°
73°
17
95°
72°
18
94°
74°
19
93°
73°
20
94°
69°
21
89°
72°
22
93°
73°
23
91°
74°
24
92°
73°
25
93°
72°
26
92°
72°
27
93°
73°
28
93°
74°
29
92°
74°
30
93°
73°
31
93°
71°
1
92°
72°
2
93°
72°
3
93°
71°
4
91°
72°
5
89°
72°
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 95°, with overnight lows between 69° and 75°. The average high for August is 92° with an average low of 73°. 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.