S
M
T
W
T
F
S
26
97°
79°
27
93°
76°
28
94°
76°
29
96°
79°
30
90°
75°
31
91°
76°
1
92°
78°
2
90°
74°
3
91°
75°
4
92°
74°
5
86°
76°
6
91°
71°
7
88°
72°
8
93°
77°
9
94°
77°
10
94°
77°
11
96°
79°
12
96°
78°
13
95°
78°
14
95°
78°
15
97°
78°
16
97°
78°
17
96°
77°
18
96°
78°
19
97°
78°
20
92°
77°
21
95°
76°
22
94°
75°
23
93°
74°
24
92°
74°
25
92°
75°
26
93°
76°
27
92°
74°
28
91°
76°
29
90°
76°
30
88°
75°
31
91°
76°
1
88°
76°
2
88°
75°
3
89°
76°
4
87°
76°
5
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Deltona
Deltona's August 2026 forecast shows daily high temperatures ranging from 87° to 97°, with overnight lows between 74° and 78°. The average high for August is 92° with an average low of 76°. 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 Deltona. See also: September | October | November.