S
M
T
W
T
F
S
29
83°
67°
30
85°
66°
31
88°
67°
1
87°
66°
2
89°
67°
3
88°
70°
4
89°
64°
5
88°
64°
6
84°
64°
7
77°
62°
8
78°
61°
9
79°
63°
10
81°
62°
11
84°
63°
12
83°
65°
13
86°
65°
14
87°
66°
15
86°
67°
16
85°
66°
17
87°
62°
18
81°
66°
19
80°
65°
20
81°
66°
21
81°
66°
22
83°
65°
23
83°
67°
24
82°
67°
25
82°
66°
26
83°
67°
27
81°
68°
28
82°
68°
29
81°
67°
30
81°
67°
1
82°
66°
2
84°
66°
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 77° to 89°, with overnight lows between 61° and 68°. The average high for April is 83° with an average low of 65°. 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.
