S
M
T
W
T
F
S
29
88°
63°
30
86°
64°
31
75°
55°
1
81°
54°
2
84°
59°
3
77°
61°
4
82°
61°
5
N/A
6
80°
61°
7
83°
59°
8
81°
57°
9
77°
53°
10
70°
52°
11
72°
53°
12
73°
55°
13
77°
57°
14
79°
56°
15
76°
56°
16
80°
57°
17
78°
54°
18
73°
58°
19
84°
60°
20
81°
59°
21
78°
59°
22
74°
58°
23
80°
59°
24
81°
59°
25
78°
58°
26
81°
58°
27
79°
57°
28
77°
55°
29
78°
57°
30
80°
52°
1
75°
50°
2
72°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Boulder
Boulder's April 2026 forecast shows daily high temperatures ranging from 70° to 84°, with overnight lows between 48° and 61°. The average high for April is 78° with an average low of 56°. 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.
