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
59°
39°
3
60°
41°
4
73°
53°
5
83°
61°
6
74°
60°
7
69°
42°
8
66°
43°
9
62°
46°
10
69°
49°
11
68°
47°
12
67°
47°
13
70°
52°
14
72°
52°
15
76°
53°
16
78°
56°
17
77°
57°
18
79°
57°
19
79°
56°
20
78°
58°
21
79°
58°
22
76°
50°
23
70°
50°
24
70°
51°
25
72°
53°
26
73°
52°
27
72°
51°
28
72°
54°
29
73°
52°
30
73°
57°
31
76°
61°
1
79°
60°
2
75°
57°
3
75°
58°
4
80°
61°
5
80°
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 59° to 83°, with overnight lows between 39° and 62°. The average high for May is 73° with an average low of 53°. 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.