S
M
T
W
T
F
S
26
90°
77°
27
90°
77°
28
91°
76°
29
92°
77°
30
92°
77°
31
91°
76°
1
92°
77°
2
91°
76°
3
92°
75°
4
91°
75°
5
91°
75°
6
92°
74°
7
91°
75°
8
92°
74°
9
92°
74°
10
93°
75°
11
92°
76°
12
91°
74°
13
91°
74°
14
90°
75°
15
90°
75°
16
91°
74°
17
90°
75°
18
90°
74°
19
93°
74°
20
93°
75°
21
92°
74°
22
92°
73°
23
91°
74°
24
90°
75°
25
92°
74°
26
91°
73°
27
90°
74°
28
91°
75°
29
93°
75°
30
92°
74°
31
91°
74°
1
91°
73°
2
90°
73°
3
90°
74°
4
89°
74°
5
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Altamonte Springs
Altamonte Springs's August 2026 forecast shows daily high temperatures ranging from 89° to 93°, with overnight lows between 73° and 77°. The average high for August is 91° with an average low of 75°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Altamonte Springs. See also: September | October | November.