S
M
T
W
T
F
S
29
59°
37°
30
57°
41°
31
46°
36°
1
37°
32°
2
45°
32°
3
34°
21°
4
50°
21°
5
55°
30°
6
53°
34°
7
53°
33°
8
56°
36°
9
58°
39°
10
57°
41°
11
51°
36°
12
49°
35°
13
50°
34°
14
49°
33°
15
53°
35°
16
57°
38°
17
55°
40°
18
55°
40°
19
62°
33°
20
48°
25°
21
45°
19°
22
43°
17°
23
46°
23°
24
50°
29°
25
55°
29°
26
53°
25°
27
56°
30°
28
55°
30°
29
49°
27°
30
48°
29°
1
48°
30°
2
50°
30°
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 43° to 62°, with overnight lows between 17° and 41°. The average high for April is 52° with an average low of 31°. 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.
