S
M
T
W
T
F
S
29
46°
33°
30
46°
26°
31
50°
20°
1
42°
29°
2
44°
36°
3
52°
30°
4
61°
27°
5
66°
30°
6
71°
31°
7
58°
32°
8
60°
26°
9
64°
26°
10
N/A
11
57°
41°
12
65°
45°
13
59°
38°
14
47°
33°
15
48°
28°
16
51°
28°
17
55°
30°
18
56°
35°
19
57°
38°
20
59°
35°
21
59°
38°
22
57°
36°
23
57°
38°
24
60°
35°
25
53°
30°
26
55°
31°
27
57°
31°
28
62°
34°
29
64°
36°
30
66°
41°
1
58°
41°
2
61°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Diamond Lake
Diamond Lake's April 2026 forecast shows daily high temperatures ranging from 47° to 66°, with overnight lows between 28° and 45°. The average high for April is 57° with an average low of 36°. 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 Diamond Lake. See also: May | June | July.