S
M
T
W
T
F
S
29
81°
50°
30
77°
50°
31
59°
50°
1
59°
50°
2
59°
43°
3
66°
37°
4
77°
39°
5
79°
45°
6
79°
46°
7
75°
47°
8
80°
52°
9
77°
53°
10
68°
50°
11
61°
46°
12
57°
41°
13
67°
42°
14
72°
46°
15
71°
49°
16
70°
48°
17
69°
46°
18
68°
46°
19
69°
47°
20
70°
43°
21
65°
40°
22
69°
47°
23
66°
47°
24
66°
48°
25
67°
45°
26
67°
46°
27
72°
48°
28
75°
49°
29
74°
47°
30
76°
50°
1
77°
49°
2
74°
50°
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 57° to 80°, with overnight lows between 40° and 53°. The average high for April is 70° with an average low of 47°. 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.
