S
M
T
W
T
F
S
26
91°
72°
27
91°
73°
28
92°
73°
29
92°
72°
30
91°
73°
31
91°
72°
1
92°
73°
2
93°
74°
3
93°
74°
4
92°
73°
5
94°
74°
6
93°
74°
7
94°
73°
8
92°
72°
9
90°
71°
10
90°
71°
11
92°
73°
12
92°
73°
13
91°
72°
14
92°
73°
15
92°
71°
16
91°
68°
17
90°
67°
18
87°
69°
19
90°
66°
20
86°
68°
21
90°
69°
22
89°
68°
23
85°
63°
24
83°
63°
25
82°
62°
26
82°
61°
27
83°
61°
28
82°
60°
29
82°
61°
30
83°
67°
31
87°
67°
1
85°
66°
2
88°
66°
3
88°
65°
4
87°
63°
5
83°
66°
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 82° to 94°, with overnight lows between 60° and 74°. The average high for August is 89° with an average low of 69°. 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.