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°
31°
12
36°
30°
13
43°
28°
14
42°
27°
15
41°
30°
16
42°
30°
17
42°
32°
18
43°
35°
19
42°
33°
20
43°
33°
21
43°
34°
22
46°
34°
23
45°
35°
24
41°
24°
25
47°
36°
26
50°
36°
27
48°
38°
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 36° to 50°, with overnight lows between 24° and 38°. 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.