S
M
T
W
T
F
S
29
68°
27°
30
68°
52°
31
81°
63°
1
81°
57°
2
84°
57°
3
77°
68°
4
86°
64°
5
66°
41°
6
59°
32°
7
52°
32°
8
68°
28°
9
75°
39°
10
77°
46°
11
68°
48°
12
84°
43°
13
77°
63°
14
82°
61°
15
83°
63°
16
84°
60°
17
80°
53°
18
83°
46°
19
51°
33°
20
50°
28°
21
66°
44°
22
68°
46°
23
69°
48°
24
67°
47°
25
67°
48°
26
65°
46°
27
62°
42°
28
61°
41°
29
61°
42°
30
62°
41°
1
62°
42°
2
63°
42°
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 50° to 84°, with overnight lows between 28° and 63°. The average high for April is 67° with an average low of 45°. 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.
