S
M
T
W
T
F
S
26
85°
74°
27
89°
77°
28
90°
75°
29
87°
73°
30
89°
69°
1
69°
57°
2
76°
55°
3
79°
54°
4
82°
56°
5
83°
68°
6
86°
73°
7
80°
66°
8
76°
67°
9
90°
74°
10
89°
74°
11
82°
69°
12
86°
66°
13
89°
63°
14
90°
64°
15
87°
68°
16
88°
69°
17
85°
78°
18
88°
78°
19
89°
68°
20
83°
67°
21
80°
72°
22
89°
69°
23
82°
70°
24
81°
69°
25
85°
70°
26
87°
73°
27
79°
72°
28
89°
73°
29
91°
72°
30
92°
71°
31
87°
70°
1
88°
69°
2
86°
69°
3
85°
70°
4
87°
70°
5
93°
75°
6
87°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sienna Plantation
Sienna Plantation's May 2026 forecast shows daily high temperatures ranging from 79° to 93°, with overnight lows between 69° and 75°. The average high for May is 87° with an average low of 71°. 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 Sienna Plantation. See also: June | July | August.