S
M
T
W
T
F
S
29
63°
27°
30
61°
28°
31
48°
30°
1
50°
34°
2
34°
21°
3
39°
21°
4
48°
28°
5
55°
19°
6
59°
23°
7
61°
31°
8
59°
27°
9
59°
25°
10
60°
36°
11
61°
35°
12
60°
30°
13
55°
29°
14
51°
25°
15
48°
23°
16
57°
26°
17
56°
28°
18
56°
29°
19
54°
21°
20
46°
16°
21
46°
15°
22
47°
17°
23
47°
18°
24
48°
18°
25
51°
23°
26
50°
18°
27
54°
20°
28
58°
24°
29
57°
26°
30
58°
27°
1
57°
26°
2
59°
27°
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 46° to 61°, with overnight lows between 15° and 36°. The average high for April is 55° with an average low of 25°. 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.
