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
63°
46°
11
63°
35°
12
58°
44°
13
68°
59°
14
79°
52°
15
69°
51°
16
70°
52°
17
69°
48°
18
60°
41°
19
58°
42°
20
56°
42°
21
58°
45°
22
61°
48°
23
65°
41°
24
57°
45°
25
58°
44°
26
57°
44°
27
56°
43°
28
57°
42°
29
56°
42°
30
58°
41°
1
59°
48°
2
67°
47°
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 56° to 79°, with overnight lows between 35° and 59°. The average high for April is 62° with an average low of 45°. 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.
