S
M
T
W
T
F
S
26
89°
68°
27
84°
69°
28
87°
66°
29
89°
64°
30
91°
72°
1
92°
73°
2
91°
63°
3
80°
63°
4
83°
63°
5
87°
68°
6
90°
70°
7
94°
69°
8
86°
65°
9
87°
69°
10
88°
70°
11
87°
69°
12
88°
68°
13
89°
68°
14
88°
69°
15
91°
67°
16
84°
69°
17
85°
68°
18
86°
70°
19
90°
70°
20
90°
71°
21
87°
71°
22
85°
68°
23
85°
66°
24
86°
69°
25
86°
71°
26
87°
72°
27
86°
72°
28
86°
71°
29
87°
72°
30
87°
71°
31
86°
72°
1
86°
72°
2
87°
73°
3
87°
73°
4
88°
72°
5
87°
72°
6
87°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Altamonte Springs
Altamonte Springs's May 2026 forecast shows daily high temperatures ranging from 80° to 94°, with overnight lows between 63° and 73°. The average high for May is 87° with an average low of 69°. 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 Altamonte Springs. See also: June | July | August.