S
M
T
W
T
F
S
29
33°
5°
30
36°
10°
31
32°
7°
1
34°
9°
2
36°
9°
3
36°
14°
4
40°
19°
5
43°
27°
6
37°
29°
7
44°
33°
8
41°
29°
9
45°
29°
10
40°
27°
11
41°
30°
12
41°
31°
13
43°
31°
14
44°
29°
15
40°
30°
16
45°
35°
17
43°
33°
18
43°
33°
19
44°
34°
20
56°
39°
21
52°
34°
22
53°
35°
23
53°
34°
24
49°
31°
25
47°
31°
26
47°
32°
27
48°
31°
28
48°
32°
29
49°
33°
30
49°
33°
1
50°
34°
2
50°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Rainbow
Rainbow's April 2026 forecast shows daily high temperatures ranging from 40° to 56°, with overnight lows between 27° and 39°. The average high for April is 46° 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 Rainbow. See also: May | June | July.