S
M
T
W
T
F
S
26
83°
67°
27
84°
72°
28
86°
70°
29
87°
74°
30
87°
69°
31
90°
69°
1
89°
74°
2
88°
77°
3
82°
76°
4
85°
75°
5
89°
75°
6
86°
72°
7
87°
72°
8
89°
71°
9
88°
72°
10
87°
70°
11
88°
70°
12
85°
71°
13
85°
68°
14
84°
69°
15
85°
70°
16
83°
69°
17
86°
72°
18
88°
72°
19
88°
71°
20
89°
71°
21
83°
70°
22
83°
70°
23
84°
71°
24
87°
71°
25
88°
70°
26
87°
71°
27
86°
71°
28
83°
70°
29
83°
69°
30
85°
70°
31
86°
70°
1
85°
69°
2
84°
68°
3
80°
66°
4
80°
66°
5
80°
64°
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 80° to 89°, with overnight lows between 64° and 77°. The average high for August is 85° with an average low of 71°. 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.