S
M
T
W
T
F
S
29
86°
44°
30
90°
54°
31
90°
54°
1
85°
50°
2
85°
55°
3
85°
49°
4
68°
43°
5
67°
41°
6
68°
42°
7
67°
42°
8
75°
50°
9
75°
53°
10
73°
54°
11
77°
50°
12
69°
49°
13
73°
48°
14
75°
51°
15
76°
44°
16
70°
48°
17
69°
49°
18
75°
50°
19
76°
50°
20
80°
51°
21
80°
52°
22
79°
52°
23
81°
53°
24
80°
52°
25
77°
49°
26
76°
51°
27
77°
53°
28
81°
53°
29
75°
52°
30
74°
54°
1
82°
54°
2
83°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Johnson
Johnson's April 2026 forecast shows daily high temperatures ranging from 67° to 85°, with overnight lows between 41° and 55°. The average high for April is 76° with an average low of 50°. 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 Johnson. See also: May | June | July.