S
M
T
W
T
F
S
26
90°
68°
27
88°
69°
28
89°
68°
29
87°
69°
30
85°
72°
31
93°
72°
1
91°
71°
2
91°
72°
3
92°
73°
4
93°
72°
5
91°
72°
6
87°
70°
7
83°
66°
8
83°
65°
9
84°
68°
10
84°
68°
11
83°
66°
12
84°
70°
13
86°
71°
14
89°
71°
15
90°
70°
16
90°
71°
17
89°
71°
18
91°
72°
19
91°
71°
20
87°
70°
21
82°
70°
22
82°
69°
23
83°
69°
24
81°
68°
25
82°
69°
26
83°
69°
27
83°
70°
28
89°
66°
29
87°
61°
30
83°
61°
31
82°
60°
1
86°
65°
2
88°
66°
3
85°
63°
4
86°
62°
5
88°
58°
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 81° to 93°, with overnight lows between 58° and 73°. The average high for August is 87° 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 August weather will actually feel in Columbia. See also: September | October | November.