S
M
T
W
T
F
S
29
48°
22°
30
65°
41°
31
74°
41°
1
77°
41°
2
41°
36°
3
68°
36°
4
61°
37°
5
57°
38°
6
49°
29°
7
53°
28°
8
51°
26°
9
52°
23°
10
69°
31°
11
60°
42°
12
56°
33°
13
71°
43°
14
84°
58°
15
86°
53°
16
85°
52°
17
72°
45°
18
56°
46°
19
53°
34°
20
52°
31°
21
51°
38°
22
58°
40°
23
59°
43°
24
58°
40°
25
56°
43°
26
55°
44°
27
59°
45°
28
56°
43°
29
55°
42°
30
56°
43°
1
58°
44°
2
58°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Johnston
Johnston's April 2026 forecast shows daily high temperatures ranging from 51° to 59°, with overnight lows between 31° and 46°. The average high for April is 56° with an average low of 41°. 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 Johnston. See also: May | June | July.
