S
M
T
W
T
F
S
26
61°
31°
27
63°
34°
28
57°
32°
29
44°
39°
30
N/A
1
60°
34°
2
56°
41°
3
46°
36°
4
56°
42°
5
59°
49°
6
57°
46°
7
55°
40°
8
52°
38°
9
53°
39°
10
55°
40°
11
56°
37°
12
57°
41°
13
56°
40°
14
55°
42°
15
60°
43°
16
57°
41°
17
57°
41°
18
58°
46°
19
57°
46°
20
63°
45°
21
65°
47°
22
65°
43°
23
58°
44°
24
57°
44°
25
60°
46°
26
61°
43°
27
60°
43°
28
59°
47°
29
59°
49°
30
61°
48°
31
60°
47°
1
61°
43°
2
60°
43°
3
61°
44°
4
60°
44°
5
61°
45°
6
61°
45°
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 46° to 65°, with overnight lows between 34° and 49°. The average high for May is 58° with an average low of 43°. 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.