S
M
T
W
T
F
S
26
97°
69°
27
95°
68°
28
94°
65°
29
91°
65°
30
96°
65°
31
100°
63°
1
99°
68°
2
98°
69°
3
96°
68°
4
95°
67°
5
94°
68°
6
93°
67°
7
94°
68°
8
93°
69°
9
92°
66°
10
92°
67°
11
91°
66°
12
90°
67°
13
93°
68°
14
92°
64°
15
90°
67°
16
92°
66°
17
89°
64°
18
90°
66°
19
92°
67°
20
93°
66°
21
93°
66°
22
94°
67°
23
94°
68°
24
93°
68°
25
94°
67°
26
94°
68°
27
93°
68°
28
94°
67°
29
93°
67°
30
94°
68°
31
94°
68°
1
93°
67°
2
94°
67°
3
91°
66°
4
90°
67°
5
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sylmar
Sylmar's August 2026 forecast shows daily high temperatures ranging from 89° to 99°, with overnight lows between 64° and 69°. The average high for August is 93° with an average low of 67°. 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 Sylmar. See also: September | October | November.
