S
M
T
W
T
F
S
26
104°
78°
27
102°
77°
28
101°
72°
29
97°
69°
30
97°
63°
31
103°
68°
1
105°
69°
2
106°
65°
3
105°
71°
4
104°
67°
5
101°
64°
6
103°
64°
7
104°
65°
8
104°
64°
9
100°
67°
10
99°
71°
11
99°
69°
12
90°
71°
13
85°
66°
14
85°
61°
15
89°
58°
16
94°
58°
17
98°
58°
18
102°
65°
19
104°
71°
20
105°
72°
21
104°
72°
22
98°
69°
23
96°
65°
24
97°
69°
25
97°
68°
26
97°
67°
27
99°
66°
28
100°
68°
29
99°
67°
30
96°
67°
31
95°
64°
1
92°
61°
2
88°
60°
3
89°
63°
4
94°
64°
5
94°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arches National Park
Arches National Park's August 2026 forecast shows daily high temperatures ranging from 88° to 105°, with overnight lows between 60° and 72°. The average high for August is 97° 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 Arches National Park. See also: September | October | November.
