S
M
T
W
T
F
S
29
46°
8°
30
51°
29°
31
40°
31°
1
33°
20°
2
33°
26°
3
42°
33°
4
35°
32°
5
36°
30°
6
41°
18°
7
32°
11°
8
42°
19°
9
45°
32°
10
41°
28°
11
47°
29°
12
44°
37°
13
58°
40°
14
56°
42°
15
58°
38°
16
53°
37°
17
58°
37°
18
48°
31°
19
39°
27°
20
47°
34°
21
53°
35°
22
52°
38°
23
53°
37°
24
51°
32°
25
45°
31°
26
44°
30°
27
45°
29°
28
45°
31°
29
47°
31°
30
46°
28°
1
47°
28°
2
46°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Rock Lake
Rock Lake's April 2026 forecast shows daily high temperatures ranging from 39° to 58°, with overnight lows between 27° and 42°. The average high for April is 49° with an average low of 33°. 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 Rock Lake. See also: May | June | July.
