S
M
T
W
T
F
S
26
79°
49°
27
81°
61°
28
62°
55°
29
64°
42°
30
67°
37°
1
64°
40°
2
61°
41°
3
76°
53°
4
76°
59°
5
64°
47°
6
59°
42°
7
60°
43°
8
66°
49°
9
72°
49°
10
73°
50°
11
69°
50°
12
71°
55°
13
76°
56°
14
76°
55°
15
75°
54°
16
79°
59°
17
76°
58°
18
75°
59°
19
79°
58°
20
73°
54°
21
76°
52°
22
70°
51°
23
70°
51°
24
71°
52°
25
70°
53°
26
71°
52°
27
72°
53°
28
73°
59°
29
74°
58°
30
78°
62°
31
74°
61°
1
74°
55°
2
75°
56°
3
77°
60°
4
78°
64°
5
80°
64°
6
78°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cottleville
Cottleville's May 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 41° and 65°. The average high for May is 73° with an average low of 54°. 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 Cottleville. See also: June | July | August.