S
M
T
W
T
F
S
26
90°
71°
27
91°
69°
28
93°
72°
29
91°
71°
30
90°
71°
1
91°
71°
2
96°
73°
3
93°
71°
4
91°
70°
5
91°
69°
6
91°
73°
7
91°
70°
8
93°
71°
9
94°
73°
10
93°
73°
11
91°
72°
12
91°
73°
13
88°
71°
14
93°
69°
15
93°
73°
16
93°
73°
17
91°
71°
18
91°
71°
19
93°
72°
20
90°
73°
21
93°
73°
22
95°
73°
23
94°
74°
24
93°
73°
25
95°
72°
26
93°
73°
27
93°
74°
28
93°
72°
29
97°
72°
30
N/A
31
89°
73°
1
88°
74°
2
89°
73°
3
89°
73°
4
87°
71°
5
89°
70°
6
83°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in St.-Louis Du Sud
St.-Louis Du Sud's May 2026 forecast shows daily high temperatures ranging from 83° to 89°, with overnight lows between 70° and 74°. The average high for May is 88° with an average low of 72°. 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 St.-Louis Du Sud. See also: June | July | August.
