S
M
T
W
T
F
S
26
88°
62°
27
87°
61°
28
87°
62°
29
86°
61°
30
87°
60°
31
86°
58°
1
84°
55°
2
81°
55°
3
80°
56°
4
81°
58°
5
81°
61°
6
85°
62°
7
87°
62°
8
87°
61°
9
86°
63°
10
88°
63°
11
87°
62°
12
85°
60°
13
86°
61°
14
85°
60°
15
84°
62°
16
85°
62°
17
87°
61°
18
86°
61°
19
87°
60°
20
86°
57°
21
83°
56°
22
81°
56°
23
81°
60°
24
82°
61°
25
85°
60°
26
80°
55°
27
80°
54°
28
80°
54°
29
79°
56°
30
78°
55°
31
80°
56°
1
81°
55°
2
82°
55°
3
81°
56°
4
78°
55°
5
84°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Palomar Mountain State Park
Palomar Mountain State Park's August 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 54° and 63°. The average high for August is 84° with an average low of 59°. 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 Palomar Mountain State Park. See also: September | October | November.