S
M
T
W
T
F
S
29
27°
6°
30
18°
-8°
31
25°
-12°
1
35°
10°
2
41°
8°
3
39°
3°
4
42°
5°
5
17°
-4°
6
31°
-6°
7
36°
4°
8
29°
1°
9
35°
7°
10
36°
12°
11
37°
17°
12
36°
8°
13
36°
15°
14
38°
16°
15
39°
16°
16
37°
17°
17
41°
15°
18
42°
18°
19
43°
16°
20
46°
18°
21
43°
20°
22
35°
18°
23
34°
15°
24
35°
12°
25
37°
25°
26
40°
25°
27
44°
18°
28
49°
28°
29
53°
28°
30
53°
29°
1
54°
29°
2
55°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Split Lake
Split Lake's April 2026 forecast shows daily high temperatures ranging from 17° to 55°, with overnight lows between -6° and 30°. The average high for April is 40° with an average low of 16°. 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 Split Lake. See also: May | June | July.