S
M
T
W
T
F
S
28
75°
59°
29
80°
60°
30
81°
57°
1
80°
55°
2
73°
54°
3
74°
53°
4
75°
54°
5
75°
60°
6
79°
55°
7
76°
54°
8
77°
52°
9
75°
53°
10
76°
60°
11
76°
60°
12
78°
57°
13
82°
54°
14
76°
55°
15
76°
55°
16
77°
56°
17
76°
56°
18
79°
61°
19
79°
61°
20
82°
60°
21
79°
61°
22
82°
60°
23
83°
61°
24
82°
59°
25
82°
59°
26
76°
54°
27
75°
54°
28
76°
53°
29
76°
55°
30
77°
55°
31
75°
56°
1
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Arrowhead Lake
Arrowhead Lake's July 2026 forecast shows daily high temperatures ranging from 73° to 83°, with overnight lows between 52° and 61°. The average high for July is 78° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Arrowhead Lake. See also: August | September | October.