S
M
T
W
T
F
S
29
63°
39°
30
71°
42°
31
49°
37°
1
39°
30°
2
42°
31°
3
43°
33°
4
44°
34°
5
51°
33°
6
46°
27°
7
39°
26°
8
65°
40°
9
56°
38°
10
51°
30°
11
56°
43°
12
67°
56°
13
74°
47°
14
50°
33°
15
45°
31°
16
51°
37°
17
57°
41°
18
57°
38°
19
54°
41°
20
57°
36°
21
53°
41°
22
53°
42°
23
63°
40°
24
56°
38°
25
58°
41°
26
53°
42°
27
56°
43°
28
64°
40°
29
56°
39°
30
62°
43°
1
60°
41°
2
57°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Johnsburg
Johnsburg's April 2026 forecast shows daily high temperatures ranging from 39° to 74°, with overnight lows between 26° and 56°. The average high for April is 57° with an average low of 40°. 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 Johnsburg. See also: May | June | July.
