S
M
T
W
T
F
S
26
106°
78°
27
106°
81°
28
106°
81°
29
104°
80°
30
102°
77°
31
101°
76°
1
102°
77°
2
102°
76°
3
103°
78°
4
105°
81°
5
106°
81°
6
106°
80°
7
103°
81°
8
103°
80°
9
104°
81°
10
104°
81°
11
103°
80°
12
102°
80°
13
99°
79°
14
100°
80°
15
101°
80°
16
103°
79°
17
104°
80°
18
105°
80°
19
105°
81°
20
104°
80°
21
105°
80°
22
104°
79°
23
100°
78°
24
103°
80°
25
107°
80°
26
107°
76°
27
105°
77°
28
105°
79°
29
104°
77°
30
104°
76°
31
103°
78°
1
104°
77°
2
103°
77°
3
101°
79°
4
101°
78°
5
102°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Twentynine Palms
Twentynine Palms's August 2026 forecast shows daily high temperatures ranging from 99° to 107°, with overnight lows between 75° and 81°. The average high for August is 104° with an average low of 79°. 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 Twentynine Palms. See also: September | October | November.