S
M
T
W
T
F
S
29
70°
40°
30
69°
33°
31
63°
35°
1
47°
37°
2
56°
23°
3
33°
19°
4
46°
29°
5
58°
22°
6
64°
27°
7
61°
37°
8
61°
39°
9
59°
36°
10
63°
39°
11
58°
38°
12
52°
34°
13
49°
33°
14
44°
31°
15
49°
33°
16
57°
36°
17
58°
36°
18
58°
33°
19
56°
34°
20
55°
29°
21
48°
23°
22
46°
22°
23
49°
30°
24
50°
33°
25
57°
33°
26
55°
27°
27
57°
30°
28
59°
34°
29
54°
33°
30
54°
32°
1
53°
35°
2
56°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Keystone
Keystone's April 2026 forecast shows daily high temperatures ranging from 44° to 63°, with overnight lows between 22° and 39°. The average high for April is 55° with an average low of 33°. 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 Keystone. See also: May | June | July.
