S
M
T
W
T
F
S
26
92°
63°
27
91°
64°
28
92°
63°
29
92°
63°
30
90°
60°
31
88°
62°
1
89°
63°
2
90°
64°
3
90°
64°
4
92°
63°
5
93°
65°
6
93°
65°
7
92°
64°
8
93°
65°
9
88°
64°
10
86°
62°
11
87°
60°
12
88°
59°
13
87°
62°
14
88°
59°
15
89°
60°
16
88°
59°
17
88°
65°
18
92°
65°
19
94°
64°
20
94°
65°
21
93°
65°
22
94°
64°
23
94°
62°
24
90°
59°
25
88°
59°
26
89°
61°
27
93°
65°
28
93°
66°
29
96°
67°
30
95°
66°
31
96°
64°
1
93°
63°
2
92°
62°
3
93°
65°
4
93°
63°
5
92°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Murrieta
Murrieta's August 2026 forecast shows daily high temperatures ranging from 86° to 96°, with overnight lows between 59° and 67°. The average high for August is 91° with an average low of 63°. 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 Murrieta. See also: September | October | November.