S
M
T
W
T
F
S
26
79°
59°
27
73°
55°
28
73°
49°
29
83°
59°
30
76°
62°
1
68°
57°
2
61°
53°
3
72°
45°
4
81°
48°
5
83°
52°
6
87°
60°
7
80°
62°
8
73°
54°
9
76°
59°
10
86°
62°
11
85°
61°
12
71°
53°
13
81°
51°
14
80°
59°
15
79°
47°
16
88°
53°
17
91°
66°
18
92°
67°
19
93°
64°
20
93°
66°
21
94°
68°
22
93°
69°
23
84°
69°
24
83°
70°
25
82°
72°
26
84°
71°
27
88°
70°
28
91°
72°
29
87°
71°
30
84°
67°
31
75°
66°
1
77°
64°
2
76°
56°
3
79°
57°
4
86°
61°
5
89°
65°
6
90°
67°
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 75° to 90°, with overnight lows between 56° and 67°. The average high for May is 82° with an average low of 63°. 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.