S
M
T
W
T
F
S
26
89°
73°
27
91°
77°
28
84°
76°
29
77°
62°
30
65°
61°
1
58°
51°
2
78°
54°
3
82°
57°
4
82°
68°
5
86°
67°
6
83°
56°
7
78°
56°
8
75°
59°
9
78°
62°
10
80°
64°
11
85°
66°
12
85°
63°
13
83°
64°
14
82°
62°
15
85°
67°
16
85°
67°
17
86°
66°
18
85°
68°
19
86°
68°
20
86°
67°
21
83°
68°
22
80°
67°
23
81°
67°
24
86°
69°
25
85°
69°
26
81°
62°
27
80°
62°
28
83°
68°
29
85°
69°
30
88°
70°
31
89°
70°
1
89°
69°
2
90°
71°
3
90°
72°
4
91°
72°
5
90°
71°
6
88°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Corsicana
Corsicana's May 2026 forecast shows daily high temperatures ranging from 58° to 91°, with overnight lows between 51° and 72°. The average high for May is 83° with an average low of 65°. 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 Corsicana. See also: June | July | August.