S
M
T
W
T
F
S
26
97°
81°
27
98°
79°
28
96°
77°
29
97°
76°
30
100°
71°
31
100°
72°
1
104°
82°
2
102°
79°
3
101°
79°
4
99°
76°
5
98°
77°
6
94°
75°
7
97°
78°
8
101°
77°
9
100°
80°
10
95°
80°
11
88°
75°
12
90°
74°
13
85°
73°
14
89°
75°
15
90°
69°
16
94°
72°
17
98°
74°
18
99°
72°
19
97°
78°
20
91°
81°
21
99°
78°
22
100°
75°
23
100°
73°
24
97°
77°
25
100°
76°
26
102°
76°
27
99°
80°
28
100°
80°
29
98°
73°
30
94°
70°
31
89°
67°
1
90°
69°
2
87°
68°
3
91°
68°
4
92°
66°
5
94°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Joshua Tree
Joshua Tree's August 2026 forecast shows daily high temperatures ranging from 87° to 100°, with overnight lows between 66° and 80°. The average high for August is 93° with an average low of 70°. 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 Joshua Tree. See also: September | October | November.
