S
M
T
W
T
F
S
29
69°
36°
30
72°
34°
31
34°
25°
1
34°
25°
2
51°
30°
3
36°
22°
4
44°
26°
5
55°
30°
6
36°
24°
7
67°
35°
8
54°
25°
9
49°
25°
10
52°
39°
11
77°
48°
12
75°
45°
13
57°
31°
14
52°
27°
15
54°
26°
16
62°
31°
17
66°
34°
18
62°
38°
19
55°
31°
20
48°
28°
21
46°
27°
22
46°
27°
23
48°
28°
24
49°
30°
25
61°
37°
26
61°
35°
27
60°
37°
28
62°
38°
29
61°
39°
30
56°
39°
1
59°
38°
2
63°
39°
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 36° to 77°, with overnight lows between 24° and 48°. The average high for April is 57° 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.
