S
M
T
W
T
F
S
29
64°
34°
30
61°
37°
31
54°
39°
1
54°
37°
2
39°
32°
3
54°
27°
4
57°
30°
5
63°
36°
6
54°
32°
7
43°
28°
8
40°
29°
9
41°
32°
10
41°
33°
11
48°
28°
12
39°
24°
13
36°
22°
14
33°
18°
15
34°
18°
16
42°
26°
17
38°
26°
18
40°
25°
19
41°
18°
20
33°
12°
21
34°
13°
22
35°
15°
23
35°
13°
24
36°
16°
25
37°
16°
26
38°
15°
27
42°
19°
28
47°
22°
29
48°
25°
30
49°
25°
1
48°
26°
2
49°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Boulder
Boulder's April 2026 forecast shows daily high temperatures ranging from 33° to 54°, with overnight lows between 12° and 33°. The average high for April is 41° with an average low of 22°. 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 Boulder. See also: May | June | July.
