S
M
T
W
T
F
S
28
81°
53°
29
85°
55°
30
87°
59°
1
87°
58°
2
87°
52°
3
92°
56°
4
93°
61°
5
87°
57°
6
89°
53°
7
89°
53°
8
92°
54°
9
96°
64°
10
96°
63°
11
94°
61°
12
94°
67°
13
96°
64°
14
99°
64°
15
101°
60°
16
94°
54°
17
95°
60°
18
91°
56°
19
92°
57°
20
87°
59°
21
92°
58°
22
93°
59°
23
94°
57°
24
93°
59°
25
97°
57°
26
92°
56°
27
93°
59°
28
91°
58°
29
90°
58°
30
88°
56°
31
88°
56°
1
89°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Clearlake
Clearlake's July 2026 forecast shows daily high temperatures ranging from 87° to 101°, with overnight lows between 54° and 64°. The average high for July is 93° with an average low of 58°. 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 Clearlake. See also: August | September | October.