S
M
T
W
T
F
S
29
82°
55°
30
73°
54°
31
61°
50°
1
53°
43°
2
59°
36°
3
71°
44°
4
77°
50°
5
79°
52°
6
78°
51°
7
77°
44°
8
77°
51°
9
69°
52°
10
55°
46°
11
51°
47°
12
48°
41°
13
61°
37°
14
64°
40°
15
66°
39°
16
64°
41°
17
70°
41°
18
72°
45°
19
68°
48°
20
50°
44°
21
57°
45°
22
56°
39°
23
68°
42°
24
70°
45°
25
53°
44°
26
59°
44°
27
61°
46°
28
72°
47°
29
80°
50°
30
82°
53°
1
84°
53°
2
71°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Clearlake
Clearlake's April 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 47° and 53°. The average high for April is 78° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Clearlake. See also: May | June | July.
