S
M
T
W
T
F
S
29
63°
34°
30
63°
30°
31
57°
30°
1
45°
34°
2
50°
21°
3
32°
18°
4
41°
21°
5
54°
16°
6
54°
30°
7
52°
35°
8
54°
30°
9
52°
28°
10
56°
33°
11
56°
31°
12
54°
32°
13
54°
30°
14
50°
25°
15
47°
25°
16
53°
31°
17
54°
32°
18
53°
33°
19
48°
20°
20
47°
18°
21
39°
16°
22
38°
15°
23
42°
23°
24
42°
23°
25
52°
25°
26
51°
24°
27
49°
27°
28
50°
28°
29
45°
28°
30
46°
27°
1
45°
28°
2
47°
26°
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 38° to 56°, with overnight lows between 15° and 35°. The average high for April is 49° with an average low of 27°. 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.
