S
M
T
W
T
F
S
26
61°
44°
27
60°
41°
28
59°
42°
29
62°
44°
30
63°
43°
1
62°
42°
2
64°
43°
3
63°
40°
4
62°
39°
5
62°
39°
6
64°
40°
7
65°
44°
8
68°
46°
9
67°
46°
10
65°
43°
11
65°
41°
12
63°
42°
13
62°
41°
14
63°
42°
15
65°
42°
16
66°
43°
17
67°
46°
18
67°
45°
19
68°
44°
20
67°
44°
21
68°
48°
22
68°
48°
23
70°
54°
24
74°
55°
25
77°
54°
26
77°
53°
27
76°
56°
28
78°
55°
29
80°
53°
30
80°
49°
31
71°
49°
1
70°
50°
2
72°
49°
3
74°
56°
4
79°
56°
5
78°
57°
6
73°
56°
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 80°, with overnight lows between 39° and 57°. The average high for May is 68° with an average low of 47°. 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.