S
M
T
W
T
F
S
26
81°
61°
27
81°
60°
28
82°
58°
29
81°
63°
30
83°
64°
31
86°
63°
1
84°
57°
2
81°
57°
3
81°
59°
4
82°
57°
5
80°
56°
6
80°
56°
7
81°
57°
8
81°
59°
9
80°
62°
10
80°
63°
11
81°
63°
12
80°
61°
13
83°
63°
14
86°
57°
15
85°
56°
16
80°
60°
17
82°
59°
18
83°
55°
19
80°
54°
20
79°
54°
21
78°
60°
22
79°
56°
23
78°
61°
24
79°
61°
25
79°
60°
26
83°
62°
27
83°
62°
28
84°
62°
29
85°
61°
30
84°
54°
31
78°
55°
1
77°
54°
2
77°
55°
3
78°
60°
4
76°
54°
5
81°
54°
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 76° to 86°, with overnight lows between 54° and 64°. The average high for August is 81° with an average low of 59°. 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.