S
M
T
W
T
F
S
26
71°
33°
27
75°
35°
28
71°
37°
29
69°
38°
30
53°
45°
1
62°
36°
2
55°
40°
3
54°
33°
4
72°
36°
5
84°
49°
6
63°
47°
7
60°
35°
8
59°
31°
9
51°
30°
10
68°
43°
11
62°
36°
12
62°
32°
13
49°
38°
14
56°
48°
15
65°
52°
16
79°
47°
17
78°
44°
18
80°
59°
19
86°
65°
20
79°
44°
21
60°
35°
22
63°
42°
23
59°
47°
24
62°
44°
25
65°
48°
26
65°
50°
27
68°
46°
28
72°
49°
29
73°
50°
30
74°
45°
31
66°
48°
1
67°
46°
2
64°
47°
3
64°
46°
4
65°
50°
5
66°
51°
6
71°
50°
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 59° to 86°, with overnight lows between 35° and 65°. The average high for May is 69° 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.
