S
M
T
W
T
F
S
26
83°
65°
27
92°
73°
28
84°
64°
29
64°
57°
30
66°
54°
1
67°
54°
2
75°
49°
3
82°
53°
4
82°
61°
5
86°
55°
6
63°
51°
7
73°
49°
8
80°
60°
9
88°
67°
10
77°
57°
11
80°
54°
12
83°
63°
13
86°
62°
14
85°
67°
15
88°
68°
16
83°
69°
17
83°
70°
18
84°
68°
19
85°
68°
20
86°
68°
21
82°
63°
22
80°
67°
23
77°
67°
24
77°
66°
25
78°
67°
26
78°
68°
27
79°
68°
28
78°
67°
29
80°
66°
30
79°
65°
31
80°
65°
1
80°
66°
2
81°
67°
3
82°
69°
4
81°
70°
5
82°
71°
6
84°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sherman
Sherman's May 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 54° and 71°. The average high for May is 82° with an average low of 66°. 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 Sherman. See also: June | July | August.