S
M
T
W
T
F
S
26
86°
64°
27
88°
74°
28
87°
74°
29
79°
65°
30
70°
60°
1
60°
56°
2
72°
47°
3
79°
55°
4
82°
60°
5
84°
68°
6
81°
58°
7
72°
52°
8
80°
59°
9
82°
64°
10
79°
62°
11
80°
62°
12
82°
64°
13
86°
66°
14
86°
65°
15
87°
64°
16
82°
67°
17
83°
66°
18
81°
67°
19
82°
68°
20
83°
68°
21
86°
64°
22
83°
61°
23
82°
62°
24
82°
63°
25
83°
65°
26
83°
62°
27
84°
62°
28
84°
63°
29
85°
69°
30
86°
69°
31
85°
70°
1
84°
70°
2
86°
69°
3
87°
70°
4
89°
71°
5
87°
71°
6
86°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Winnsboro
Winnsboro's May 2026 forecast shows daily high temperatures ranging from 72° to 89°, with overnight lows between 47° and 71°. The average high for May is 83° with an average low of 64°. 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 Winnsboro. See also: June | July | August.