S
M
T
W
T
F
S
26
83°
66°
27
86°
64°
28
85°
63°
29
85°
65°
30
86°
69°
31
85°
64°
1
85°
69°
2
88°
69°
3
90°
64°
4
84°
63°
5
85°
62°
6
84°
63°
7
84°
64°
8
83°
63°
9
84°
63°
10
86°
66°
11
83°
66°
12
84°
68°
13
84°
68°
14
85°
67°
15
87°
68°
16
89°
62°
17
85°
61°
18
82°
62°
19
82°
66°
20
83°
61°
21
82°
61°
22
82°
62°
23
83°
64°
24
87°
65°
25
88°
64°
26
87°
60°
27
86°
59°
28
80°
58°
29
80°
59°
30
81°
59°
31
82°
63°
1
85°
64°
2
85°
64°
3
84°
61°
4
83°
64°
5
84°
62°
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 90°, with overnight lows between 58° and 69°. The average high for August is 84° with an average low of 64°. 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.