S
M
T
W
T
F
S
29
89°
51°
30
94°
61°
31
69°
48°
1
63°
39°
2
84°
45°
3
71°
45°
4
67°
36°
5
73°
32°
6
77°
44°
7
74°
45°
8
82°
48°
9
86°
54°
10
84°
54°
11
83°
55°
12
88°
59°
13
89°
53°
14
88°
54°
15
79°
48°
16
90°
45°
17
78°
40°
18
66°
31°
19
77°
36°
20
82°
45°
21
84°
53°
22
88°
60°
23
85°
59°
24
81°
44°
25
78°
56°
26
77°
51°
27
79°
44°
28
68°
40°
29
70°
47°
30
61°
46°
1
51°
40°
2
61°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Clear Lake
Clear Lake's April 2026 forecast shows daily high temperatures ranging from 51° to 79°, with overnight lows between 40° and 51°. The average high for April is 67° with an average low of 44°. 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 Clear Lake. See also: May | June | July.