S
M
T
W
T
F
S
26
67°
27°
27
74°
29°
28
66°
32°
29
63°
42°
30
50°
43°
1
60°
29°
2
49°
30°
3
53°
32°
4
72°
31°
5
85°
41°
6
67°
51°
7
63°
36°
8
57°
33°
9
59°
26°
10
69°
41°
11
62°
33°
12
59°
27°
13
46°
29°
14
55°
43°
15
61°
52°
16
80°
49°
17
83°
45°
18
70°
48°
19
91°
71°
20
87°
44°
21
66°
35°
22
65°
41°
23
63°
45°
24
61°
43°
25
63°
47°
26
65°
49°
27
68°
48°
28
74°
48°
29
74°
53°
30
76°
46°
31
67°
50°
1
70°
49°
2
66°
48°
3
65°
48°
4
65°
50°
5
66°
51°
6
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cornish
Cornish's May 2026 forecast shows daily high temperatures ranging from 61° to 91°, with overnight lows between 35° and 71°. The average high for May is 70° with an average low of 48°. 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 Cornish. See also: June | July | August.
