S
M
T
W
T
F
S
26
81°
55°
27
81°
55°
28
71°
59°
29
80°
61°
30
68°
51°
1
66°
45°
2
68°
44°
3
68°
37°
4
78°
39°
5
78°
45°
6
76°
64°
7
69°
49°
8
71°
45°
9
73°
49°
10
81°
55°
11
77°
51°
12
75°
50°
13
79°
50°
14
73°
44°
15
78°
40°
16
82°
48°
17
90°
63°
18
85°
64°
19
84°
64°
20
85°
63°
21
80°
67°
22
79°
64°
23
78°
62°
24
82°
63°
25
81°
62°
26
81°
64°
27
80°
60°
28
78°
61°
29
80°
62°
30
82°
59°
31
84°
61°
1
85°
63°
2
86°
63°
3
85°
62°
4
81°
62°
5
81°
60°
6
85°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cornwall Furnace
Cornwall Furnace's May 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 59° 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 Cornwall Furnace. See also: June | July | August.
