S
M
T
W
T
F
S
26
55°
39°
27
70°
36°
28
59°
41°
29
61°
50°
30
68°
39°
1
68°
34°
2
61°
43°
3
63°
37°
4
75°
39°
5
82°
46°
6
70°
57°
7
63°
43°
8
72°
37°
9
70°
52°
10
81°
46°
11
61°
43°
12
75°
50°
13
74°
49°
14
61°
47°
15
70°
50°
16
82°
58°
17
88°
61°
18
89°
64°
19
92°
64°
20
83°
57°
21
77°
59°
22
79°
58°
23
80°
58°
24
80°
59°
25
81°
55°
26
81°
60°
27
82°
61°
28
82°
61°
29
81°
60°
30
83°
62°
31
83°
61°
1
82°
59°
2
75°
55°
3
75°
57°
4
79°
62°
5
77°
61°
6
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Columbia
Columbia's May 2026 forecast shows daily high temperatures ranging from 61° to 92°, with overnight lows between 47° and 64°. The average high for May is 80° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Columbia. See also: June | July | August.