S
M
T
W
T
F
S
26
103°
67°
27
103°
67°
28
102°
69°
29
103°
69°
30
103°
68°
31
102°
69°
1
102°
68°
2
101°
66°
3
98°
67°
4
98°
68°
5
100°
68°
6
101°
67°
7
100°
68°
8
100°
68°
9
101°
67°
10
102°
68°
11
103°
67°
12
102°
66°
13
103°
65°
14
102°
67°
15
95°
63°
16
96°
64°
17
Hist. Avg.
105°
76°
18
Hist. Avg.
104°
75°
19
Hist. Avg.
104°
75°
20
Hist. Avg.
104°
75°
21
Hist. Avg.
104°
75°
22
Hist. Avg.
104°
75°
23
Hist. Avg.
103°
75°
24
Hist. Avg.
103°
74°
25
Hist. Avg.
103°
74°
26
Hist. Avg.
103°
74°
27
Hist. Avg.
103°
74°
28
Hist. Avg.
102°
73°
29
Hist. Avg.
102°
73°
30
Hist. Avg.
102°
73°
31
Hist. Avg.
102°
73°
1
Hist. Avg.
102°
73°
2
Hist. Avg.
101°
72°
3
Hist. Avg.
101°
72°
4
Hist. Avg.
101°
72°
5
Hist. Avg.
101°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Morongo Valley
Morongo Valley's August 2026 forecast shows daily high temperatures ranging from 95° to 103°, with overnight lows between 63° and 69°. The average high for August is 101° 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 Morongo Valley. See also: September | October | November.