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°
28°
8
42°
34°
9
43°
27°
10
37°
28°
11
38°
28°
12
36°
31°
13
44°
32°
14
42°
27°
15
37°
32°
16
42°
33°
17
39°
31°
18
43°
31°
19
40°
32°
20
40°
29°
21
38°
24°
22
40°
28°
23
42°
32°
24
40°
31°
25
45°
33°
26
44°
34°
27
56°
45°
28
49°
38°
29
48°
33°
30
48°
33°
1
49°
37°
2
49°
37°
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 37° to 56°, with overnight lows between 24° and 45°. The average high for April is 44° with an average low of 33°. 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.