S
M
T
W
T
F
S
29
61°
39°
30
64°
50°
31
72°
55°
1
72°
61°
2
77°
55°
3
73°
61°
4
75°
59°
5
59°
41°
6
57°
32°
7
54°
37°
8
63°
34°
9
68°
43°
10
70°
45°
11
80°
50°
12
82°
54°
13
75°
55°
14
80°
55°
15
81°
58°
16
78°
58°
17
78°
57°
18
79°
59°
19
69°
40°
20
66°
46°
21
71°
51°
22
72°
53°
23
71°
54°
24
70°
44°
25
63°
48°
26
65°
44°
27
63°
43°
28
64°
45°
29
65°
45°
30
69°
48°
1
67°
47°
2
65°
51°
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 63° to 82°, with overnight lows between 40° and 59°. The average high for April is 72° with an average low of 50°. 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.
