S
M
T
W
T
F
S
26
95°
75°
27
95°
74°
28
96°
76°
29
94°
75°
30
95°
74°
31
94°
73°
1
92°
72°
2
91°
72°
3
86°
71°
4
88°
73°
5
87°
73°
6
91°
74°
7
92°
74°
8
92°
73°
9
91°
73°
10
91°
72°
11
90°
73°
12
89°
72°
13
90°
73°
14
93°
72°
15
93°
73°
16
91°
72°
17
92°
71°
18
91°
70°
19
87°
64°
20
85°
63°
21
83°
62°
22
83°
64°
23
85°
63°
24
85°
65°
25
88°
70°
26
91°
68°
27
92°
70°
28
92°
71°
29
91°
71°
30
92°
70°
31
91°
70°
1
89°
65°
2
89°
60°
3
81°
62°
4
83°
68°
5
87°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arrowhead
Arrowhead's August 2026 forecast shows daily high temperatures ranging from 81° to 96°, with overnight lows between 60° and 76°. The average high for August is 90° 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 Arrowhead. See also: September | October | November.