S
M
T
W
T
F
S
29
37°
14°
30
45°
28°
31
42°
27°
1
33°
27°
2
32°
29°
3
33°
28°
4
32°
21°
5
47°
41°
6
46°
26°
7
38°
24°
8
31°
16°
9
45°
33°
10
47°
32°
11
43°
36°
12
44°
35°
13
43°
33°
14
39°
31°
15
40°
32°
16
42°
33°
17
41°
30°
18
44°
32°
19
45°
31°
20
46°
34°
21
50°
33°
22
46°
32°
23
46°
32°
24
47°
35°
25
49°
35°
26
47°
34°
27
47°
34°
28
48°
33°
29
47°
33°
30
48°
30°
1
48°
32°
2
49°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in River John
River John's April 2026 forecast shows daily high temperatures ranging from 31° to 50°, with overnight lows between 16° and 41°. The average high for April is 44° with an average low of 32°. 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 River John. See also: May | June | July.